Aptos is a people-first blockchain on a mission to help billions of people achieve universal and fair access to decentralized assets in a safe and scalable way. Founded by some of the original creators and maintainers that researched, designed, and built the Diem blockchain to serve this purpose, we have dedicated several years toward this mission. We believe the open-source Diem technology we have developed is an important foundation of a safe and scalable web3 world where everyone has more equitable opportunities to grow and access financial assets with lower fees and fewer intermediaries.   Aptos (Ohlone for "The People") encompasses our mission and ethos for why we build.About The Role We are looking for a Software Engineer to join our Move language team. You will be working on designing the new generation of the Move virtual machine (VM), ensuring it is both secure and performant. If you are eager to work on cutting-edge technology,  passionate about performance, language design and runtime, and thrive in fast-paced environments, we are excited to have you join our team! What you'll be doing:

Collaborate with other engineers to analyze, optimize, and re-design components of the Move VM to improve its performance and scalability. Create benchmarks and identify performance bottlenecks of the Move VM. Implement security measures to protect the Move VM from potential vulnerabilities. Write clean, maintainable code and participate in reviews for other team members.

What we're looking for:

Bachelor’s or Master’s degree in Computer Science, Engineering, or a related field with background in compilers, performance optimization, concurrency or related fields. Graduates as well as experienced developers will be considered. Proficiency in programming languages such as Rust, C++, or similar, with a strong understanding of systems programming.  You have experience working with or are excited to learn about virtual machines, bytecode interpreters, code generation, memory management, parallel transaction execution and performance engineering. Exceptional problem-solving skills and ability to work autonomously. Being ready to take ownership of projects, and ensuring their end-to-end delivery. Previous experience with blockchain systems and smart contracts is not necessarily needed, but is a plus.

  The base salary range for this full-time position is $180k - $300k. The range displayed on each job posting reflects the minimum and typical maximum target for new hire salaries for the position of a candidate based in the Bay Area at any level. We do hire exceptionally talented professionals with decades of experience in their field. As such, our range may be higher than what is displayed. Our base salary ranges are determined by experience and location, and we hire at all levels for multiple roles. Within the range, individual pay is determined by work location, job-related skills demonstrated during the interviews, working experience, and relevant education or training. Please note that the compensation details listed in role postings reflect the base salary only and do not include equity, tokens, or benefits.Our Benefits

100% insurance premium coverage for medical, dental, and vision for you and your dependents (US Employees) Equipment of your choice Flexible vacation time, 11 holidays, and floating company days off  Competitive Salary Equity (RSUs) (US employees) Protocol Token Grants 401k matching (US Employees) Fun and inclusive in-person and digital events

Aptos is committed to diversity in the workplace, and we’re proud to be an Equal Opportunity Employer. We do not hire on the basis of race, color, religion, creed, gender, national origin, citizenship, age, disability, veteran status, marital status, pregnancy, parental status, sex, gender expression or identity, sexual orientation, or any other basis protected by local, state or federal law. All employment is decided based on qualifications, merit, and business need.

We are committed to providing a safe and secure hiring process for all applicants. Unfortunately, there are individuals who may attempt to impersonate Aptos or our employees for fraudulent purposes.To protect yourself, please be aware of the following:

We will never ask you for payment of any kind during the application or onboarding process, including fees for background checks, training, or equipment. We will always communicate with you using our official company email domain. We will never request your personal financial information, such as your social security number or bank account details, during the initial application stages or via email or a video/voice call when onboarding.

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About Zscaler Serving thousands of enterprise customers around the world including 40% of Fortune 500 companies, Zscaler (NASDAQ: ZS) was founded in 2007 with a mission to make the cloud a safe place to do business and a more enjoyable experience for enterprise users. As the operator of the world’s largest security cloud, Zscaler accelerates digital transformation so enterprises can be more agile, efficient, resilient, and secure. The pioneering, AI-powered Zscaler Zero Trust Exchange™ platform, which is found in our SASE and SSE offerings, protects thousands of enterprise customers from cyberattacks and data loss by securely connecting users, devices, and applications in any location. Named a Best Workplace in Technology by Fortune and others, Zscaler fosters an inclusive and supportive culture that is home to some of the brightest minds in the industry. If you thrive in an environment that is fast-paced and collaborative, and you are passionate about building and innovating for the greater good, come make your next move with Zscaler. Our Engineering team built the world's largest cloud security platform from the ground up, and we keep building. With more than 100 patents and big plans for enhancing services and increasing our global footprint, the team has made us and our multitenant architecture today's cloud security leader, with more than 15 million users in 185 countries. Bring your vision and passion to our team of cloud architects, software engineers, security experts, and more who are enabling organizations worldwide to harness speed and agility with a cloud-first strategy. We're looking for a Director, Software Development to be part of our Cyber Risk and Governance Team. Reporting to the VP, Software Engineering, you'll be responsible for:

Shaping the long-term vision for security engineering platforms and collaborating with assurance and operations leaders to drive a unified strategy Developing and implementing innovative distributed software platforms to enhance security for Zscaler's engineers and hybrid cloud infrastructure Driving the adoption and integration of owned platforms with internal stakeholders in engineering, IT, legal and compliance

What We're Looking for (Minimum Qualifications)

10+ years of experience in software development, including 5+ years of experience of development at scale on public clouds (AWS, GCP, Azure) Security Experience: 5+ years in IAM, Data Security, Network Security, Cloud/Container Security, App Security, and Vulnerability Management Over 5 years of leadership experience managing remote teams of 10+, driving growth in Agile, cross-functional environments Experienced in distributed systems and data engineering, specializing in designing, developing, and managing scalable backend infrastructures and data-driven platforms Skilled in schema design, messaging systems, storage, ETL/ELT pipelines, analytics, and BI tools

What Will Make You Stand Out (Preferred Qualifications)

Proven expertise in designing and operating scalable, autonomous, and self-recoverable applications handling millions of endpoints and billions of transactions per second Proven expertise in technical strategy, system design, and guiding architecture with proficiency in Java, Python, Golang, or Rust Proficient in secure application development, including SDLC, authentication/authorization, secure data management, and addressing security defects

LI-Onsite

LI-SK3At Zscaler, we are committed to building a team that reflects the communities we serve and the customers we work with. We foster an inclusive environment that values all backgrounds and perspectives, emphasizing collaboration and belonging. Join us in our mission to make doing business seamless and secure.

Our Benefits program is one of the most important ways we support our employees. Zscaler proudly offers comprehensive and inclusive benefits to meet the diverse needs of our employees and their families throughout their life stages, including:

Various health plans Time off plans for vacation and sick time Parental leave options Retirement options Education reimbursement In-office perks, and more!

By applying for this role, you adhere to applicable laws, regulations, and Zscaler policies, including those related to security and privacy standards and guidelines. Zscaler is committed to providing equal employment opportunities to all individuals. We strive to create a workplace where employees are treated with respect and have the chance to succeed. All qualified applicants will be considered for employment without regard to race, color, religion, sex (including pregnancy or related medical conditions), age, national origin, sexual orientation, gender identity or expression, genetic information, disability status, protected veteran status, or any other characteristic protected by federal, state, or local laws. See more information by clicking on the Know Your Rights: Workplace Discrimination is Illegal link. Pay Transparency Zscaler complies with all applicable federal, state, and local pay transparency rules. Zscaler is committed to providing reasonable support (called accommodations or adjustments) in our recruiting processes for candidates who are differently abled, have long term conditions, mental health conditions or sincerely held religious beliefs, or who are neurodivergent or require pregnancy-related support.

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As stewards of the Polkadot and Substrate ecosystem, Parity is laying the foundation for a better web. We believe in a decentralised web that respects the freedom and data of individuals and empowers developers to create better services. Our vision is to create a world based on truthful, rather than trustful, interactions.

Parity is one of the world's most experienced core blockchain infrastructure companies, having built and pioneered some of the most advanced technologies in the blockchain sector.

With a remote-first, global team, Parity is building open-source technologies for developers and organisations to implement and build upon. Our Web3 tech stack includes Polkadot, Substrate, and Kusama.

People in our collective are:

• Highly motivated to contribute to Parity’s mission and be part of something bigger

• Excited to work on projects that are groundbreaking and complex

• Autonomous workers that self-initiate, but also collaborate well with others

• Taking maximum accountability and having minimum ego at work

• Comfortable with chaos and adapting to the ever-changing Web3 space

• Continuously educating themselves about Parity and the wider ecosystem

About the team

The DevEx team works across the entire Polkadot ecosystem to improve developer workflows, tooling, and documentation. We own the experience of developers—from first contact with a template, guide, or CLI, to advanced tooling used in production.

This is not a support role. You’ll build the tools you wish already existed. You’ll collaborate with core engineering, marketing, solutions, and the community. You’ll also attend hackathons, support builders, and help scale what’s possible in the ecosystem.

About the Position

• Design and implement CLI tools, templates, SDKs, and onboarding flows.

• Improve and maintain documentation and developer portals.

• Write code samples, example projects, integration demos (Rust, TypeScript, Solidity).

• Contribute to better CI/CD setups for devs building with Substrate and Polkadot SDK.

• Engage with developer teams, answer deep technical questions, gather feedback.

• Work cross-functionally with engineering and product teams.

• Participate in events and hackathons, acting as an ambassador for great DevEx.

About You

• 3+ years of experience in Rust, 2+ years in TypeScript.

• Solidity experience — you’ve built and deployed smart contracts using Foundry, Hardhat, or Remix.

• Comfortable working with Linux, Docker, and CI/CD pipelines.

• A solid understanding of blockchain development, especially Substrate or EVM-based ecosystems.

• Experience writing technical documentation, tutorials, or guides.

• Confidence to speak with external developers — on Discord, Matrix, or in person.

• A bias toward automation, quality, and clarity.

• Enthusiasm for open source, hackathons, and building things developers love.

Bonus points for

• Experience with smart contracts.

• Contributions to open-source developer tools or frameworks.

• Involvement in blockchain communities, hackathons, or meetups.

About working for us

• Competitive remuneration packages based on iterative market research, including tokens (where legally possible)

• “Future of work” environment that’s remote-first and self-initiating with flexible hours

• Teammates that are genuinely excited about their impact and projects

• Access to the brightest minds in this space to learn about Web3 and develop your skills and knowledge while on the job

• Becoming part of the wider ecosystem (career and networking opportunities)

• Team and company-wide retreats

• Work laptop

• Opportunity to relocate to Germany or Portugal (with visa sponsorship)

Those joining our collective as an employee in Germany, Portugal, Switzerland and the U.K. also enjoy benefits such as health care, parental leave, PTO (28 days per year), local team events, yearly L&D budget, and language classes.

Parity is an Equal Opportunity Employer. We welcome diversity in our global team and care about everyone in our collective feeling included and welcome.

View our Applicant Notice to see how we use your data.

Is this position not quite your match? Browse our other open roles.

Apply Now:

As stewards of the Polkadot and Substrate ecosystem, Parity is laying the foundation for a better web. We believe in a decentralised web that respects the freedom and data of individuals and empowers developers to create better services. Our vision is to create a world based on truthful, rather than trustful, interactions.

Parity is one of the world's most experienced core blockchain infrastructure companies, having built and pioneered some of the most advanced technologies in the blockchain sector.

With a remote-first, global team, Parity is building open-source technologies for developers and organisations to implement and build upon. Our Web3 tech stack includes Polkadot, Substrate, and Kusama.

People in our collective are:

• Highly motivated to contribute to Parity’s mission and be part of something bigger

• Excited to work on projects that are groundbreaking and complex

• Autonomous workers that self-initiate, but also collaborate well with others

• Taking maximum accountability and having minimum ego at work

• Comfortable with chaos and adapting to the ever-changing Web3 space

• Continuously educating themselves about Parity and the wider ecosystem

About the team:

The DevEx team works across the entire Polkadot ecosystem to improve developer workflows, tooling, and documentation. We own the experience of developers—from first contact with a template, guide, or CLI, to advanced tooling used in production.

This is not a support role. You’ll build the tools you wish already existed. You’ll collaborate with core engineering, marketing, solutions, and the community. You’ll also attend hackathons, support builders, and help scale what’s possible in the ecosystem.

About the Position

We're looking for a Developer Experience Manager to lead and scale the efforts that make building on our ecosystem delightful for developers. This role is part player, part coach, balancing hands-on contributions with strategic direction, internal coordination, and developer advocacy. You’ll work closely with engineering, product, and leadership to improve tooling, documentation, and support for teams building with Substrate and the Polkadot SDK.

• Own and evolve our DevEx strategy across SDKs, CLIs, onboarding, and developer tooling.

• Prioritize and drive improvements to documentation, developer portals, and support flows.

• Collaborate with internal teams to identify pain points and streamline dev workflows.

• Represent developer needs in roadmap discussions and influence cross-functional planning.

• Guide technical writers, engineers, and advocates to produce high-quality samples, demos, and content.

• Lead feedback loops with internal and external developers to continuously improve the experience.

• Participate in community events and champion best practices for developer success.

About You

• 8+ years of experience in software engineering, including 2+ years in developer tooling or DevEx roles.

• Proficient in Rust and TypeScript, with a strong understanding of the smart contract landscape (e.g., Solidity + Foundry/Hardhat).

• Strong communicator and collaborator; experienced in working across product, engineering, and leadership teams.

• Comfortable running internal discovery efforts and aligning technical direction with business goals.

• Deep understanding of developer workflows  from onboarding to CI/CD to debugging.

• Experienced in writing and reviewing documentation, tutorials, or onboarding flows.

• Passion for supporting developers, both internally and externally.

Bonus points for

• Experience managing or mentoring DevEx or DevRel teams.

• Contributions to open-source developer tools or frameworks.

• Participation in hackathons, community programs, or educational initiatives.

About working for us

• Competitive remuneration packages based on iterative market research, including tokens (where legally possible)

• “Future of work” environment that’s remote-first and self-initiating with flexible hours

• Teammates that are genuinely excited about their impact and projects

• Access to the brightest minds in this space to learn about Web3 and develop your skills and knowledge while on the job

• Becoming part of the wider ecosystem (career and networking opportunities)

• Team and company-wide retreats

• Work laptop

• Opportunity to relocate to Germany or Portugal (with visa sponsorship)

Those joining our collective as an employee in Germany, Portugal, Switzerland and the U.K. also enjoy benefits such as health care, parental leave, PTO (28 days per year), local team events, yearly L&D budget, and language classes.

Parity is an Equal Opportunity Employer. We welcome diversity in our global team and care about everyone in our collective feeling included and welcome.

View our Applicant Notice to see how we use your data.

Is this position not quite your match? Browse our other open roles.

Apply Now:

Who are we? FalconX is a pioneering team of operators, investors, and builders committed to revolutionizing institutional access to the crypto markets. Operating at the intersection of traditional finance and 
cutting-edge technology, FalconX addresses the industry's foremost challenges: Navigating the digital asset market can be complex and fragmented, with limited products and services that support trading strategies, structures, and liquidity found in conventional financial markets. As a comprehensive solution for all digital asset strategies from start to scale, FalconX operates as the connective tissue empowering clients with seamless navigation through the ever-
evolving cryptocurrency landscape.Senior Trading Systems Developer – Electronic Trading (Java/Rust) Location: [Insert location or “Remote”] | Team: Trading Technology | Type: Full-Time About FalconX FalconX is a digital asset brokerage and trading platform that connects institutional investors to the global crypto markets. We’re bridging the gap between traditional finance and digital assets through world-class infrastructure, high-performance trading systems, and an unwavering focus on reliability, scale, and innovation. As a market leader serving hedge funds, asset managers, and financial institutions, we are building a next-generation platform for high- and low-touch trading workflows across spot, derivatives, and structured products. The Role We’re looking for a Senior Trading Systems Developer with strong experience in Java and Rust to architect and build our next-generation Order Management System (OMS) and electronic trading execution platform. This platform will be central to supporting complex electronic trading workflows, such as market making and internalizing flow spanning high- and low-touch desks. You’ll be designing and developing scalable, low-latency components that are resilient under heavy load and tightly integrated with our execution stack and internal trading infrastructure. What You’ll Do

Design and implement a high-performance OMS for institutional trading workflow and EMS for electronic trading strategies and internalization engines. Lead the development of core order lifecycle components: order entry, modification, routing, risk checks, and state management. Build scalable services using Java and Rust, optimized for latency and throughput. Collaborate with strategy developers, product managers, and infrastructure teams to deliver flexible and extensible trading systems. Ensure system resilience, observability, and recovery in distributed, high-availability environments. Integrate with external market venues and internal trading strategies using WebSocket, REST, and FIX APIs. Drive code quality, testability, and production readiness through CI/CD, monitoring, and alerting best practices.

What We’re Looking For

5+ years of experience designing and building distributed trading systems. Expertise in Java (11+) and Rust for performance-critical systems. C++ a plus. Experience building or significantly contributing to an Order Management System (OMS) or Execution Management System (EMS). Solid understanding of order state transitions, event-driven architecture, and low-latency system design. Experience with WebSocket, REST, FIX, and OpenSSL at the protocol level. Knowledge of market structure, trading workflows (high- and low-touch), market making, and electronic trading best practices. Experience with high-performance messaging frameworks (e.g., Aeron, Chronicle, ZeroMQ, Kafka). Strong computer science fundamentals in data structures, algorithms, concurrency, and memory management. Familiarity with cloud-native environments, performance tuning, and system observability.

Bonus Points

Prior experience in crypto markets or electronic trading in traditional finance. Experience integrating OMS with strategy containers, risk engines, or smart order routers. Knowledge of FIX protocol nuances and connectivity to major exchanges. Exposure to container orchestration, service mesh, or hybrid deployment architectures.

The base pay for this role is expected to be between $179,000 and $242,000  in the New York City Area. This expected base pay range is based on information at the time this post was generated. This role will also be eligible for other forms of compensation such as a performance linked bonus, equity, and a competitive benefits package. Actual compensation for a successful candidate will be determined based on a number of factors such as location, skillset, experience, qualifications and the level at which the candidate is hired.Notice at Collection and Privacy Policy Applicants located in California and/or applying to a role based in California, please refer to our Notice at Collection and Privacy Policy here.   Inclusivity Statement FalconX is committed to building a diverse, inclusive, equitable, and safe workspace for all people. Our roles are intended for people from all walks of life. We encourage all those interested in applying to our organization to submit an application regardless if you are missing some of the listed background requirements, skills, or experiences! As part of our commitment to inclusivity, FalconX would like to acknowledge that the EEOC survey has limited potential responses that you can select. For legal reasons, FalconX must use this language to align with federal requirements, however, we want to ensure that you are able to provide a response to our own voluntary survey questions about your identity that best aligns with your most true self. FalconX is an equal opportunity employer and will not discriminate against an applicant or employee based on race, color, religion, national origin, ancestry, ethnicity, sex (including gender, pregnancy, sexual orientation, and gender identity), age, physical or mental disability, veteran or military status, genetic information, citizenship, or any other legally-recognized protected basis under federal, state, or local law. Applicants with disabilities may be entitled to reasonable accommodation under the Americans with Disabilities Act and other applicable state or local laws. A reasonable accommodation is a change in the way things are normally done which will ensure an equal employment opportunity without imposing undue hardship on FalconX. Please inform FalconX’s People team at email, if you need assistance with participating in the application process.

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About Symbiotic

At Symbiotic, we are building a permissionless shared security primitive that empowers network builders to shape and personalise their unique restaking implementation. Our goal is to minimise risks while maximising freedom for all you wonderful builders of crypto infrastructure networks. We have a robust developer-centric proposition and we can’t wait to share it with everyone.

You can find more information about what we’re building and how we’re doing it in our docs.

Our People

We’re a tight-knit team of experienced individuals at the forefront of crypto infrastructure. Our backgrounds range from security auditing and smart contract development to node operation, and we’re supported by Paradigm and CyberFund.

We’re on the hunt for talented professionals to join our mission and strengthen our awesome team.

The Role

We are seeking a Senior Smart Contract Engineer to work on our existing smart contract codebase, including core contracts, core extensions, and middleware SDK, as well as develop new upcoming modules.

What You’ll Do

• Work at the intersection of blockchain protocols and smart contracts, contributing to the design and development of EVM-based systems
• Write, optimize, and audit smart contracts in Solidity, with a focus on performance, clarity, and security
• Build and experiment with staking, DeFi, and other protocol-level primitives
• Leverage tools like Foundry and Hardhat for development, testing, and deployment
• Conduct and support security audits, addressing vulnerabilities and integrating best practices
• Collaborate closely with protocol engineers to support integrations across L1 and L2 chains
• Work with web3 libraries like ethers.js, viem, and web3.py for off-chain contract interactions
• Occasionally contribute to related tooling and scripting in Python and TypeScript

Who You Are

• Strong understanding of Ethereum L1/L2 architecture and PoS mechanisms
• Familiar with blockchain primitives such as consensus algorithms and cryptography
• Deep knowledge of EVM internals: execution flow, memory/storage models, gas mechanics, and precompiles
• Expert in Solidity, with exposure to Yul, Vyper, or Huff (a plus)
• Solid grasp of DeFi concepts: DEXes, lending protocols, stablecoins, and staking mechanisms
• Proficient with Foundry, Hardhat, and comfortable working with ethers.js, web3.js, viem, or web3.py
• Strong security mindset, familiar with common attack vectors and the auditing process
• Practical coding experience in Python and JavaScript/TypeScript

Nice to Have

• Experience in compilers development
• Experience in Rust, Go, C/C++
• Experience in protocol development such as L1, L2
• OP stack, Arbitrum knowledge
• Experience with ZK on EVM

Logos is a movement supporting the development of the decentralised web. Logos technologies lay the foundations for a freer internet upon which communities can evolve into network states. Each protocol in the Logos stack seeks to empower its users while upholding civil liberties and fundamental freedoms.   About Vac Vac builds public good protocols for the decentralized web. We do applied research based on which we build protocols, libraries and publications. Vac’s R&D Service Units are integral to supporting IFT projects by researching and developing base components and secure, unbiased protocols. With the IFT’s extensive use of the Nim ecosystem, the Vac Nim Service Unit focuses on the development and maintenance of Nim tooling and core libraries essential for IFT projects.The Nim unit works on critical tools in the Nim ecosystem, including the Nim compiler, Nimble (package manager), and nim-suggest, ensuring they are efficient, reliable, and up-to-date.The Nim unit further plans to maintain core libraries developed by IFT, such as Chronos.The mandate of the Nim unit also includes providing support to IFT projects regarding the use of Nim, identifying and addressing specific project needs and demands related to the Nim ecosystem. The role We’re looking for a skilled Nim developer to help drive the development and maintenance of Nimble, the Nim language server, and core Nim libraries across a range of IFT projects.In this role, you’ll work closely with project teams to consolidate, report, and resolve Nim-related issues and bugs, while also contributing to the ongoing improvement of developer tooling and the Nim ecosystem.The ideal candidate has strong experience with Nim, a solid grasp of language tooling and core programming concepts, and enjoys collaborating across teams to deliver robust solutions.If you’re passionate about open-source development, enjoy tackling complex technical challenges, and want to help shape the future of Nim at IFT, we’d love to hear from you. Key responsibilities

Contribute to the ongoing development and maintenance of Nimble, the official package manager for Nim, ensuring robust dependency management and a smooth developer experience. Address feature requests, resolve bugs, and improve documentation for Nimble to support the Nim ecosystem. Develop, maintain, and extend the Nim language server to improve IDE integration, code completion, error diagnostics, and overall tooling for Nim developers. Help maintain and evolve Nim core libraries. Collaborate with users and contributors to identify and implement enhancements that streamline the developer workflow Monitor, collect, and consolidate Nim-related issues and bugs arising in various IFT projects, and either report or directly address and resolve these issues as appropriate. Act as a liaison between IFT project teams and the Nim core development community, ensuring that feedback and requirements are clearly communicated and tracked.

You ideally will have

Proficiency in Nim programming language, with hands-on experience developing and maintaining Nim projects. Experience with C, C++, Rust, or similar, especially in systems or embedded programming contexts. Solid understanding of data structures and algorithms. Experience with concepts such as parsing, lexing, and semantic analysis, especially as they relate to compilers or language tooling. Familiarity with Nim’s standard library and ecosystem, including asynchronous programming, networking, and multi-threaded programming. Experience maintaining or contributing to package managers or similar developer tooling (e.g., Nimble). Understanding of language server protocols and experience working with or developing language servers. Proficiency in Git. Strong debugging and testing skills, with the ability to identify, report, and resolve issues across multiple projects. Effective communication skills for collaborating across teams and reporting on bugs and issues. Problem-solving ability and attention to detail

Bonus points

Experience working for an open-source organization. Knowledge of type theory and programming language foundations. Experience with peer-to-peer technologies, blockchain, or cryptography. Background in IDE tooling, language tooling, or developer experience improvements

Hiring process

Interview with our POps team Interview with team member from the Vac team Pair programming with team member from the Vac Nim unit Interview with Vac team lead

Compensation The expected compensation range for this role is $100,000 - $150,000 USD annually (negotiable, dependent on how we assess your skills and experience throughout our interview process). We are happy to pay in any mix of fiat/crypto.

Apply Now:

DMarket, recently acquired by Mythical Games, makes the secure purchase and trade of virtual items possible through our blockchain-enabled marketplace. Mythical Games is a Venture-backed game technology company powering the next generation of players, games, and studios.  Our goal is to launch exceptional video games that leverage distributed ledger tech while also providing a platform that will allow other game developers to do the same. At Mythical Games, we are proud of our ‘People First’ culture. We believe that it takes great people and culture to make great products.  By treating each other with empathy and respect, we can live fulfilling lives outside of our jobs while also creating exceptional work.This role at Mythical Games presents an opportunity for a Senior Rust Developer to take their career to the next level by joining the most exciting company at the intersection of Gaming, E-commerce, and Blockchain. Responsibilities:

Developing and supporting one or several services of the platform; Writing efficient, scalable, and reusable code; Bugs fixing; Reviewing and building architecture of the high-load product.

Requirements and skills:

4+ years of Backend development experience; 2+ years of experience in blockchain industry; 3+ years of experience with Rust programming language - advanced type system knowledge, macros, build scripts, targets; Experience with Substrate will be a huge advantage; Work experience with Kafka, Redis, MongoDB, CockroachDB(PostgreSQL); Experience in the development and successful launch of high-load projects; Experience in performance-oriented programming - data structures, caches, profiling; Experience with microservice architecture, service discovery; Understanding of fundamental design principles behind a scalable application; Understanding of fundamental designs of OOP, SOLID; Habits in writing unit/integration tests; Experience with Docker, Kubernetes; Ability to deal with substandard issues.

Nice to Have:

Interest in the gaming industry; Experience with Golang.

Location: Ukraine; Remote Work Hiring process: ✅Intro call with a Recruiter → ✅Technical Interview → ✅Final Interview → ✅Reference Check → ✅Offer We offer:

Team of like-minded professionals who understand your game passion; Work in an international product company - Mythical Games is the resident of Diia City; Competitive financial reward; Health care starting on your first working day; 22 paid vacation days, paid sick leaves and other personal days in accordance with the company's internal policies; Flexible working hours; Referral bonuses; Financial support and PTO in case of special occasions governed by the internal policies of the company. Our team values diversity and believes that it strengthens our games, products, and communities.  We strongly encourage POC, folks with disabilities, those belonging to the LGBTQIA+ communities, and people across all gender to apply.  If you need assistance with accommodations due to a disability, please reach out to email. We’ll be with you as soon as possible; our goal is to ensure an accessible and equitable interview process.

Apply Now:

About Zscaler Serving thousands of enterprise customers around the world including 40% of Fortune 500 companies, Zscaler (NASDAQ: ZS) was founded in 2007 with a mission to make the cloud a safe place to do business and a more enjoyable experience for enterprise users. As the operator of the world’s largest security cloud, Zscaler accelerates digital transformation so enterprises can be more agile, efficient, resilient, and secure. The pioneering, AI-powered Zscaler Zero Trust Exchange™ platform, which is found in our SASE and SSE offerings, protects thousands of enterprise customers from cyberattacks and data loss by securely connecting users, devices, and applications in any location. Named a Best Workplace in Technology by Fortune and others, Zscaler fosters an inclusive and supportive culture that is home to some of the brightest minds in the industry. If you thrive in an environment that is fast-paced and collaborative, and you are passionate about building and innovating for the greater good, come make your next move with Zscaler. 

Our Engineering team built the world’s largest cloud security platform from the ground up, and we keep building. With more than 100 patents and big plans for enhancing services and increasing our global footprint, the team has made us and our multitenant architecture today's cloud security leader, with more than 15 million users in 185 countries. Bring your vision and passion to our team of cloud architects, software engineers, security experts, and more who are enabling organizations worldwide to harness speed and agility with a cloud-first strategy.

We are looking for an experienced Software Engineer to join our Cloud Browser Isolation/ Data Path Team. Reporting to the Senior Manager, Software Development Engineering, based in Madrid, you will be working remotely and you'll be responsible for:

Owning the definition, design, implementation, testing, delivery, monitoring, and reliability of multiple core components to ensure optimal browser streaming experiences for customers. Collaborating with stakeholders to analyze requirements and develop scalable, secure, and extensible technical solutions for cloud applications. Writing high-quality, testable, maintainable, and secure code, while integrating appropriate tests into CI/CD pipelines for reliable deployments. Fostering team growth through mentoring and knowledge sharing, maintaining a focus on continuous learning and improvement. Taking full ownership of deployed services, including on-call responsibilities, to ensure reliability and minimize production incidents.

What We Are Looking For (Minimum Qualifications):

6+ years of professional experience in software engineering, with at least 3 years dedicated to developing applications for Linux and cloud-based, high-traffic systems. Strong coding skills in C++. API & HTTP Knowledge: In-depth knowledge of RESTful APIs with a solid understanding of the HTTP protocol and request/response lifecycle. Familiarity with technologies such as gRPC or WebSockets. Strong grasp of system design principles, programming fundamentals, and experience with microservice-based and distributed architectures.

What Will Make You Stand Out (Preferred Qualifications):

Proficiency in computer graphics libraries (e.g., OpenGL, Vulkan), GPU driver development, Chromium rendering, browser engines, and modern web technologies such as WebAudio, WebGL, or WebAssembly. Expertise in media streaming technologies, low-level networking protocols (TCP, UDP), containerization tools (Docker, Kubernetes), and strong coding skills in Rust. Familiarity with automation tools for code quality, testing, and CI/CD pipelines to optimize development and deployment processes.

LI-MM8#LI-REMOTEAt Zscaler, we are committed to building a team that reflects the communities we serve and the customers we work with. We foster an inclusive environment that values all backgrounds and perspectives, emphasizing collaboration and belonging. Join us in our mission to make doing business seamless and secure.

Our Benefits program is one of the most important ways we support our employees. Zscaler proudly offers comprehensive and inclusive benefits to meet the diverse needs of our employees and their families throughout their life stages, including:

Various health plans Time off plans for vacation and sick time Parental leave options Retirement options Education reimbursement In-office perks, and more!

By applying for this role, you adhere to applicable laws, regulations, and Zscaler policies, including those related to security and privacy standards and guidelines. Zscaler is committed to providing equal employment opportunities to all individuals. We strive to create a workplace where employees are treated with respect and have the chance to succeed. All qualified applicants will be considered for employment without regard to race, color, religion, sex (including pregnancy or related medical conditions), age, national origin, sexual orientation, gender identity or expression, genetic information, disability status, protected veteran status, or any other characteristic protected by federal, state, or local laws. See more information by clicking on the Know Your Rights: Workplace Discrimination is Illegal link. Pay Transparency Zscaler complies with all applicable federal, state, and local pay transparency rules. Zscaler is committed to providing reasonable support (called accommodations or adjustments) in our recruiting processes for candidates who are differently abled, have long term conditions, mental health conditions or sincerely held religious beliefs, or who are neurodivergent or require pregnancy-related support.

Apply Now:

Numeus is a diversified digital asset investment firm built to the highest institutional standards, combining synergistic businesses across Alpha Strategies, Trading, and Asset Management. Numeus was founded by successful executives with decades of experience across the finance, blockchain and technology industries, with a shared passion for digital assets. Our values are grounded in an open approach based on connectivity, collaboration, and partnerships across the digital asset ecosystem. People and technology are at the core of everything we do. As a Senior Quantitative Developer on our Crypto Options team, you will design and build the production systems that power our derivatives trading strategies and market making operations. You'll be responsible for developing robust, efficient trading applications that implement sophisticated quantitative models for pricing, risk management, and alpha generation across crypto options markets. This role sits at the intersection of trading strategy implementation and software engineering, requiring both technical expertise and financial markets understanding.

Key Responsibilities:

Develop full-stack production applications to run derivatives strategies and support market making operations for crypto options Implement pricing and risk management models for crypto volatility surfaces and options contracts Create tools for market data analysis, trade execution, and performance evaluation Develop connectivity solutions for crypto derivatives exchanges with error handling and reconnection logic Design trading execution algorithms for crypto options markets Collaborate with quantitative researchers to translate trading strategy concepts into production code Implement monitoring dashboards and real-time risk management tools

Skill Set and Qualifications:

Bachelor's or Master's degree in Computer Science, Mathematics, Engineering, or related quantitative field 3+ years of software development experience in finance or trading Strong programming skills in C++, Rust, Python and knowledge of object-oriented design Experience developing production trading systems or financial applications Working knowledge of database systems and data processing Experience with web technologies and API design Familiarity with options pricing models and volatility surfaces

Are you keen to work in a well-resourced startup environment, where your ideas, experience, and drive to find creative solutions makes a difference? We’d like to hear from you.

Apply Now:

About Vac

Vac builds public good protocols for the decentralized web. We do applied research based on which we build protocols, libraries and publications.

Vac’s R&D Service Units are integral to supporting IFT projects by researching and developing base components and secure, unbiased protocols.

With the IFT’s extensive use of the Nim ecosystem, the Vac Nim Service Unit focuses on the development and maintenance of Nim tooling and core libraries essential for IFT projects. The Nim unit works on critical tools in the Nim ecosystem, including the Nim compiler, Nimble (package manager), and nim-suggest, ensuring they are efficient, reliable, and up-to-date.

The Nim unit further plans to maintain core libraries developed by IFT, such as Chronos.

The mandate of the Nim unit also includes providing support to IFT projects regarding the use of Nim, identifying and addressing specific project needs and demands related to the Nim ecosystem.

The role

We’re looking for a skilled Nim developer to help drive the development and maintenance of Nimble, the Nim language server, and core Nim libraries across a range of IFT projects. In this role, you’ll work closely with project teams to consolidate, report, and resolve Nim-related issues and bugs, while also contributing to the ongoing improvement of developer tooling and the Nim ecosystem.

The ideal candidate has strong experience with Nim, a solid grasp of language tooling and core programming concepts, and enjoys collaborating across teams to deliver robust solutions. If you’re passionate about open-source development, enjoy tackling complex technical challenges, and want to help shape the future of Nim at IFT, we’d love to hear from you.

Key responsibilities

• Contribute to the ongoing development and maintenance of Nimble, the official package manager for Nim, ensuring robust dependency management and a smooth developer experience.
• Address feature requests, resolve bugs, and improve documentation for Nimble to support the Nim ecosystem.
• Develop, maintain, and extend the Nim language server to improve IDE integration, code completion, error diagnostics, and overall tooling for Nim developers.
• Help maintain and evolve Nim core libraries.
• Collaborate with users and contributors to identify and implement enhancements that streamline the developer workflow
• Monitor, collect, and consolidate Nim-related issues and bugs arising in various IFT projects, and either report or directly address and resolve these issues as appropriate.
• Act as a liaison between IFT project teams and the Nim core development community, ensuring that feedback and requirements are clearly communicated and tracked.

You ideally will have

• Proficiency in Nim programming language, with hands-on experience developing and maintaining Nim projects.
• Experience with C, C++, Rust, or similar, especially in systems or embedded programming contexts.
• Solid understanding of data structures and algorithms.
• Experience with concepts such as parsing, lexing, and semantic analysis, especially as they relate to compilers or language tooling.
• Familiarity with Nim’s standard library and ecosystem, including asynchronous programming, networking, and multi-threaded programming.
• Experience maintaining or contributing to package managers or similar developer tooling (e.g., Nimble).
• Understanding of language server protocols and experience working with or developing language servers.
• Proficiency in Git.
• Strong debugging and testing skills, with the ability to identify, report, and resolve issues across multiple projects.
• Effective communication skills for collaborating across teams and reporting on bugs and issues.
• Problem-solving ability and attention to detail

Bonus points

• Experience working for an open-source organization.
• Knowledge of type theory and programming language foundations.
• Experience with peer-to-peer technologies, blockchain, or cryptography.
• Background in IDE tooling, language tooling, or developer experience improvements

Hiring process

• Interview with our POps team
• Interview with team member from the Vac team
• Pair programming with team member from the Vac Nim unit
• Interview with Vac team lead

Compensation

The expected compensation range for this role is $100,000 - $150,000 USD annually (negotiable, dependent on how we assess your skills and experience throughout our interview process). We are happy to pay in any mix of fiat/crypto.

About Zscaler Serving thousands of enterprise customers around the world including 40% of Fortune 500 companies, Zscaler (NASDAQ: ZS) was founded in 2007 with a mission to make the cloud a safe place to do business and a more enjoyable experience for enterprise users. As the operator of the world’s largest security cloud, Zscaler accelerates digital transformation so enterprises can be more agile, efficient, resilient, and secure. The pioneering, AI-powered Zscaler Zero Trust Exchange™ platform, which is found in our SASE and SSE offerings, protects thousands of enterprise customers from cyberattacks and data loss by securely connecting users, devices, and applications in any location. Named a Best Workplace in Technology by Fortune and others, Zscaler fosters an inclusive and supportive culture that is home to some of the brightest minds in the industry. If you thrive in an environment that is fast-paced and collaborative, and you are passionate about building and innovating for the greater good, come make your next move with Zscaler. Our Engineering team built the world’s largest cloud security platform from the ground up, and we keep building. With more than 100 patents and big plans for enhancing services and increasing our global footprint, the team has made us and our multitenant architecture today's cloud security leader, with more than 15 million users in 185 countries. Bring your vision and passion to our team of cloud architects, software engineers, security experts, and more who are enabling organizations worldwide to harness speed and agility with a cloud-first strategy. We're looking for an experienced Senior Software Development Engineer to join our Integration team. Reporting to the Manager, Software Engineering you'll be responsible for:

Contributing to the creation and maintenance of integrations between CBI and internal or external products and services, enhancing Zscaler’s offering beyond what a single solution can provide Understanding and contributing to the design and development of services enabling these integrations Being independent and flexible enough to learn and use the right tools for the right tasks Actively seeking to learn and participating in all phases of SDLC: development, testing, deployment, and operations Asking critical questions about presented ideas, and also bringing their own, while being open to constructive criticism regarding those ideas

What We're Looking for (Minimum Qualifications):

2+ years of experience with Go/ Rust/ C/ C++ working on creating and maintaining highly scalable application(s) Solid understanding of HTTP and RPC based protocols Ability to independently create and understand industry standard system design documents Ability to understand and contribute to design and development of services required to enhance CBI’s integrations Independent and flexible enough to learn and use the right tool for the right task

What Will Make You Stand Out (Preferred Qualifications):

Proficient in Node.js Independent to setup/create and maintain CI/CD pipelines

LI-MM8

LI-REMOTEAt Zscaler, we are committed to building a team that reflects the communities we serve and the customers we work with. We foster an inclusive environment that values all backgrounds and perspectives, emphasizing collaboration and belonging. Join us in our mission to make doing business seamless and secure.

Our Benefits program is one of the most important ways we support our employees. Zscaler proudly offers comprehensive and inclusive benefits to meet the diverse needs of our employees and their families throughout their life stages, including:

Various health plans Time off plans for vacation and sick time Parental leave options Retirement options Education reimbursement In-office perks, and more!

By applying for this role, you adhere to applicable laws, regulations, and Zscaler policies, including those related to security and privacy standards and guidelines. Zscaler is committed to providing equal employment opportunities to all individuals. We strive to create a workplace where employees are treated with respect and have the chance to succeed. All qualified applicants will be considered for employment without regard to race, color, religion, sex (including pregnancy or related medical conditions), age, national origin, sexual orientation, gender identity or expression, genetic information, disability status, protected veteran status, or any other characteristic protected by federal, state, or local laws. See more information by clicking on the Know Your Rights: Workplace Discrimination is Illegal link. Pay Transparency Zscaler complies with all applicable federal, state, and local pay transparency rules. Zscaler is committed to providing reasonable support (called accommodations or adjustments) in our recruiting processes for candidates who are differently abled, have long term conditions, mental health conditions or sincerely held religious beliefs, or who are neurodivergent or require pregnancy-related support.

Apply Now:

Who are we? FalconX is a pioneering team of operators, investors, and builders committed to revolutionizing institutional access to the crypto markets. Operating at the intersection of traditional finance and 
cutting-edge technology, FalconX addresses the industry's foremost challenges: Navigating the digital asset market can be complex and fragmented, with limited products and services that support trading strategies, structures, and liquidity found in conventional financial markets. As a comprehensive solution for all digital asset strategies from start to scale, FalconX operates as the connective tissue empowering clients with seamless navigation through the ever-
evolving cryptocurrency landscape.About The Role: We’re looking for a Senior Trading Systems Developer with strong experience in Java and Rust to architect and build our next-generation Order Management System (OMS) and electronic trading execution platform. This platform will be central to supporting complex electronic trading workflows, such as market making and internalizing flow spanning high- and low-touch desks. You’ll be designing and developing scalable, low-latency components that are resilient under heavy load and tightly integrated with our execution stack and internal trading infrastructure. What You’ll Do

Design and implement a high-performance OMS for institutional trading workflow and EMS for electronic trading strategies and internalization engines. Lead the development of core order lifecycle components: order entry, modification, routing, risk checks, and state management. Build scalable services using Java and Rust, optimized for latency and throughput. Collaborate with strategy developers, product managers, and infrastructure teams to deliver flexible and extensible trading systems. Ensure system resilience, observability, and recovery in distributed, high-availability environments. Integrate with external market venues and internal trading strategies using WebSocket, REST, and FIX APIs. Drive code quality, testability, and production readiness through CI/CD, monitoring, and alerting best practices.

What We’re Looking For

5+ years of experience designing and building distributed trading systems. Expertise in Java and Rust for performance-critical systems. C++ a plus. Experience building or significantly contributing to an Order Management System (OMS) or Execution Management System (EMS). Solid understanding of order state transitions, event-driven architecture, and low-latency system design. Experience with WebSocket, REST, FIX, and OpenSSL at the protocol level. Knowledge of market structure, trading workflows (high- and low-touch), market making, and electronic trading best practices. Experience with high-performance messaging frameworks (e.g., Aeron, Chronicle, ZeroMQ, Kafka). Strong computer science fundamentals in data structures, algorithms, concurrency, and memory management. Familiarity with cloud-native environments, performance tuning, and system observability.

Bonus Points

Prior experience in crypto markets or electronic trading in traditional finance. Experience integrating OMS with strategy containers, risk engines, or smart order routers. Knowledge of FIX protocol nuances and connectivity to major exchanges. Exposure to container orchestration, service mesh, or hybrid deployment architectures. Notice at Collection and Privacy Policy Applicants located in California and/or applying to a role based in California, please refer to our Notice at Collection and Privacy Policy here.   Inclusivity Statement FalconX is committed to building a diverse, inclusive, equitable, and safe workspace for all people. Our roles are intended for people from all walks of life. We encourage all those interested in applying to our organization to submit an application regardless if you are missing some of the listed background requirements, skills, or experiences! As part of our commitment to inclusivity, FalconX would like to acknowledge that the EEOC survey has limited potential responses that you can select. For legal reasons, FalconX must use this language to align with federal requirements, however, we want to ensure that you are able to provide a response to our own voluntary survey questions about your identity that best aligns with your most true self. FalconX is an equal opportunity employer and will not discriminate against an applicant or employee based on race, color, religion, national origin, ancestry, ethnicity, sex (including gender, pregnancy, sexual orientation, and gender identity), age, physical or mental disability, veteran or military status, genetic information, citizenship, or any other legally-recognized protected basis under federal, state, or local law. Applicants with disabilities may be entitled to reasonable accommodation under the Americans with Disabilities Act and other applicable state or local laws. A reasonable accommodation is a change in the way things are normally done which will ensure an equal employment opportunity without imposing undue hardship on FalconX. Please inform FalconX’s People team at email, if you need assistance with participating in the application process.

Apply Now:

At Hiro, we build developer tools that bring Web3 to Bitcoin. Our suite of tools unlocks the full potential of Bitcoin through smart contracts, digital assets, and decentralized applications. With Hiro tools, developers can test and deploy smart contracts, spin up nodes and other server-side resources for scaling, and more. Building on Bitcoin is hard. Hiro's developer tools make it easier. We’re very proud to say that Hiro has consistently been recognized on Built In’s Best Places to Work list, including 2025’s Best Remote Startups to Work For, Best Startups to Work For in New York City, 50 Best U.S. Startup Companies to Work For, and 100 Best Remote Places to Work. Hiro is funded and backed by more than $75 million from Union Square Ventures, Y Combinator, Lux Capital, Winklevoss Capital, Naval Ravikant, and others. About the Opportunity Hiro is seeking a skilled and enthusiastic Senior Software Engineer to join our API team! If you’re passionate about building and scaling backend systems and APIs that empower developers, this role is for you. Our team thrives on collaboration, innovation, and a shared commitment to our mission. We care deeply about each other, the company, and the Stacks ecosystem, fostering a supportive and inclusive culture. As an API Software Engineer at Hiro, you’ll focus on designing, building, and optimizing the APIs that power our developer platform. In this remote-first role you will collaborate with a talented, distributed team and have broad ownership to implement services that serve our developer community. You’ll tackle challenges in scalability, performance, and security to ensure our APIs are robust and developer-friendly. You’ll work across a modern, open-source tech stack (TypeScript/Node.js, Rust, PostgreSQL, GCP, Kubernetes, etc.), leveraging CI/CD and automation (and even AI-assisted tools) to ship high-quality code efficiently. Join us at a rapidly growing startup where you can innovate freely and help bring the next generation of Web3 applications to Bitcoin. What You’ll Do:

Design, build, and maintain scalable backend services and APIs that drive Hiro’s developer platform (e.g. blockchain data, token metadata, ordinals) on Bitcoin and Stacks. Ensure high performance and reliability of our APIs – you’ll optimize endpoints, databases, and caching to handle increasing load with low latency and high uptime. Collaborate cross-functionally with product managers, frontend engineers, and DevOps to plan and implement new features end-to-end, delivering seamless experiences for developers. Write and automate thorough tests (unit, integration, performance) for your code – we use tools like k6 for load testing and Playwright for end-to-end testing – to ensure every release is of top quality. Participate in code reviews and architecture discussions, contributing to design decisions and championing engineering best practices to continuously improve code quality. Monitor and troubleshoot production systems as needed, debug issues across services and the stack, and implement fixes to maintain the stability and security of our platform. Work across the stack when necessary – primarily on backend APIs, but occasionally diving into frontend code or internal tools – to deliver complete solutions and improve our overall developer experience.

What We’re Looking For:

5+ years of software development experience building and shipping production applications, with a focus on backend systems or API-driven services. Strong proficiency in TypeScript/Node.js and/or Rust. (Our core services are built with these languages.) You can quickly pick up new languages and technologies as needed. Demonstrated experience designing, building, and scaling web APIs or microservices – you have tackled challenges in system design, performance tuning, and reliability for high-traffic services. Hands-on experience with relational databases, especially PostgreSQL – from data modeling and querying to performance optimization. Familiarity with modern cloud and container infrastructure. You’ve worked with containers/orchestration (Docker, Kubernetes) and deployed services on cloud platforms (we use GCP). Passion for code quality and automation. You write clean, maintainable code and have experience with automated testing and CI/CD pipelines (GitHub Actions or similar) to ensure smooth deployments. Excellent communication and collaboration skills. Comfortable working in a remote, distributed team and coordinating across time zones. Self-driven and ownership-minded. You take initiative, have a bias for action, and can manage projects end-to-end in a fast-paced environment.

We’d Also Like to See:

Blockchain/Web3 experience or interest. Familiarity with decentralized networks, or a keen interest in learning blockchain tech. Experience building developer-focused products. For example, working on developer tools, SDKs, or API platforms – understanding what makes a great developer experience. Exposure to performance tuning and observability. Knowledge of caching (Redis), profiling and optimizing high-traffic systems, and using monitoring/logging tools (Grafana, Prometheus, Loki) to ensure reliability. Infrastructure and DevOps know-how. Familiarity with infrastructure-as-code (Terraform), CI/CD tooling (ArgoCD), and global cloud networking (CDN/DNS/WAF like Cloudflare) is a plus. Open-source contributions or community involvement. Experience contributing to open-source projects or engaging with developer communities.

We’d love to hear from you even if you don’t have experience or interest in every bullet. What We’ll Offer:

Salary Range (regardless of location, benchmarked annually) $150,000 - $200,000. Company equity and Stacks (STX) tokens--STX is the native cryptocurrency of the Stacks network $500/mo co-working space reimbursement $1,200/yr stipend for learning and development $1,000/yr of charity donation matching to an organization of your choosing Daily Lunch Reimbursement (even if you’re remote!) Open Vacation Policy, take the days you need Family-Friendly Health Benefits Free Life and Disability Insurance Health and dependent care (FSA) Up to 16 weeks of paid parental leave Pre-tax commuter benefits 401k with 3% match

Please note that benefits vary by country, the ones shown above are for our full time U.S. based employees. Benefit information for non-US based positions will be provided to individuals who interview for those roles. Due to legal and logistical constraints, we are currently only able to hire candidates residing in the United States, Canada, and select countries in the EU. Hiro is proud to be an equal opportunity employer and deeply cares about building a diverse team. Hiro is committed to building an inclusive environment for people of all backgrounds. We do not discriminate on the basis of race, color, gender, sexual orientation, gender identity or expression, religion, disability, national origin, protected veteran status, age, or any other status protected by law.  

Apply Now:

As a Senior Blockchain Engineer, you will be responsible for designing, developing, and optimizing smart contracts and blockchain infrastructure for our platform. You will work closely with the CPO and product teams, and other engineers to deliver innovative and secure solutions within the DeFi ecosystem.

Technical Leadership & Architecture

• Design and optimize blockchain product architecture with a focus on scalability, security, and performance.
• Develop and improve cross-chain interoperability solutions (cross-chain swaps, bridges, and interconnectivity).
• Lead the development, auditing, and integration of smart contracts within decentralized protocols.
• Design and develop efficient algorithms with a focus on gas optimization.
• Conduct technical research, proof-of-concept (PoC) experiments, and implement best practices in blockchain development.

Team Collaboration & Development Process

• Work closely with product and engineering teams to design optimal blockchain solutions.
• Define and implement effective CI/CD processes for blockchain development.
• Perform code reviews, mentor developers, and enforce best practices in blockchain engineering.
• Collaborate with auditors and cross-functional teams to ensure successful product launches.

Technical Excellence & Innovation

• Continuously monitor emerging blockchain, Web3, and crypto technologies.
• Analyze and address potential attack vectors, ensuring security best practices.
• Optimize blockchain infrastructure to improve performance and reduce transaction costs.
• Engage with blockchain communities, contribute to open-source initiatives, and participate in ecosystem discussions.

Experience Required

• 7+ years of software development experience, with at least 3+ years in blockchain engineering.
• Deep understanding of blockchain ecosystems, smart contracts (Solidity, Yul, EVM), and decentralized applications (dApps).
• Hands-on experience with Ethereum, Layer 2 solutions (Optimistic & ZK Rollups), and cross-chain protocols (atomic swaps, bridges, etc.).
• Proven track record in technical leadership, architectural decision-making, and mentoring development teams.
• Strong background in blockchain security and experience with smart contract audits.

Skills

• Proficiency in Solidity, Yul, Rust, TypeScript.
• Experience with smart contract development and deployment frameworks (Foundry, Hardhat).
• Understanding of DeFi protocols, AMMs, liquidity pools, and oracle integrations.
• Expertise in blockchain security principles and smart contract auditing methodologies.
• Experience in building high-performance distributed systems.

Mindset

• “Get Stuff Done” Mentality – ability to execute quickly while maintaining security and quality.
• Strong problem-solving skills and ability to navigate the constant innovations of the crypto market.
• Passion for research, innovation, and staying ahead of blockchain industry trends.
• Commitment to decentralization and open-source development.

Performance Measurement

• Speed and efficiency of feature deployments and updates.
• Code quality and successful security audit results.
• Impact on system architecture and scalability.
• Contribution to team growth and technical expertise.

Why you’ll love working with us

• Join a young, creative team in a fast-paced and supportive environment
• We’re open to new ideas — if you’ve got a vision, pitch it and make it happen
• Enjoy competitive pay that matches your skills and experience
• Be part of a company that’s shaping the future of DeFi
• Take time when you need it — we offer unlimited vacation days
• Get fully compensated for your work gear — we’ll set you up for success
• Travel with us! We host an annual team retreat at a top international location

Join Tether and Shape the Future of Digital Finance

Innovate with Tether

Why Join Us?

The Wallet Development Kit (WDK) Software Engineer contributes to Tether's open-source toolkit for building self-custodial wallet applications across mobile and desktop platforms. This position involves technical design, implementation, and collaboration with other

Responsibilities

• Innovative Solutions: Contribute to the creation of groundbreaking projects, utilizing agile methodologies and innovative technologies to create incredible platforms.
• Scalability: Ensure backend services remain effortlessly responsive and real-time, accommodating the platform's continual growth and evolving user base.
• Security: Uphold the highest security standards in all backend processes and services to safeguard our users' assets and data.

• Advanced Node/JavaScript Expertise: +5 years of experience working with Nodejs and JavaScript programming.

• Past experience building or integrating crypto wallets for DeFi and blockchain applications.

• Modular Architecture: Familiarity with modular architecture for scalable applications.

• Complex Platform Development: Experience in actively developing complex platforms and APIs.

• Peer-to-Peer Technologies: Understanding of Peer-to-Peer technologies.

• Quick Learner: Ability to quickly adapt and learn new technologies.

• Security Awareness: Strong understanding and experience implementing best security practices.

Nice to have

• High-Availability Concepts: Experience with high-availability concepts and best practices for ensuring system reliability.

• Additional Programming Skills: Knowledge of Go, Rust, or C++ is advantageous.

• Familiarity with message queues (Redis), caches, and job queues.

• Mobile Development: Experience in React Native, Flutter or Native mobile development.

Apply Now:

Join Tether and Shape the Future of Digital Finance

Innovate with Tether

Why Join Us?

The Wallet Development Kit (WDK) Software Engineer contributes to Tether's open-source toolkit for building self-custodial wallet applications across mobile and desktop platforms. This position involves technical design, implementation, and collaboration with other

Responsibilities

• Innovative Solutions: Contribute to the creation of groundbreaking projects, utilizing agile methodologies and innovative technologies to create incredible platforms.
• Scalability: Ensure backend services remain effortlessly responsive and real-time, accommodating the platform's continual growth and evolving user base.
• Security: Uphold the highest security standards in all backend processes and services to safeguard our users' assets and data.

• Advanced Node/JavaScript Expertise: +5 years of experience working with Nodejs and JavaScript programming.

• Past experience building or integrating crypto wallets for DeFi and blockchain applications.

• Modular Architecture: Familiarity with modular architecture for scalable applications.

• Complex Platform Development: Experience in actively developing complex platforms and APIs.

• Peer-to-Peer Technologies: Understanding of Peer-to-Peer technologies.

• Quick Learner: Ability to quickly adapt and learn new technologies.

• Security Awareness: Strong understanding and experience implementing best security practices.

Nice to have

• High-Availability Concepts: Experience with high-availability concepts and best practices for ensuring system reliability.

• Additional Programming Skills: Knowledge of Go, Rust, or C++ is advantageous.

• Familiarity with message queues (Redis), caches, and job queues.

• Mobile Development: Experience in React Native, Flutter or Native mobile development.

Apply Now:

Join Tether and Shape the Future of Digital Finance

Innovate with Tether

Why Join Us?

The Wallet Development Kit (WDK) Software Engineer contributes to Tether's open-source toolkit for building self-custodial wallet applications across mobile and desktop platforms. This position involves technical design, implementation, and collaboration with other

Responsibilities

• Innovative Solutions: Contribute to the creation of groundbreaking projects, utilizing agile methodologies and innovative technologies to create incredible platforms.
• Scalability: Ensure backend services remain effortlessly responsive and real-time, accommodating the platform's continual growth and evolving user base.
• Security: Uphold the highest security standards in all backend processes and services to safeguard our users' assets and data.

• Advanced Node/JavaScript Expertise: +5 years of experience working with Nodejs and JavaScript programming.

• Past experience building or integrating crypto wallets for DeFi and blockchain applications.

• Modular Architecture: Familiarity with modular architecture for scalable applications.

• Complex Platform Development: Experience in actively developing complex platforms and APIs.

• Peer-to-Peer Technologies: Understanding of Peer-to-Peer technologies.

• Quick Learner: Ability to quickly adapt and learn new technologies.

• Security Awareness: Strong understanding and experience implementing best security practices.

Nice to have

• High-Availability Concepts: Experience with high-availability concepts and best practices for ensuring system reliability.

• Additional Programming Skills: Knowledge of Go, Rust, or C++ is advantageous.

• Familiarity with message queues (Redis), caches, and job queues.

• Mobile Development: Experience in React Native, Flutter or Native mobile development.

Apply Now:

Join Tether and Shape the Future of Digital Finance

Innovate with Tether

Why Join Us?

The Wallet Development Kit (WDK) Software Engineer contributes to Tether's open-source toolkit for building self-custodial wallet applications across mobile and desktop platforms. This position involves technical design, implementation, and collaboration with other

Responsibilities

• Innovative Solutions: Contribute to the creation of groundbreaking projects, utilizing agile methodologies and innovative technologies to create incredible platforms.
• Scalability: Ensure backend services remain effortlessly responsive and real-time, accommodating the platform's continual growth and evolving user base.
• Security: Uphold the highest security standards in all backend processes and services to safeguard our users' assets and data.

• Advanced Node/JavaScript Expertise: +5 years of experience working with Nodejs and JavaScript programming.

• Past experience building or integrating crypto wallets for DeFi and blockchain applications.

• Modular Architecture: Familiarity with modular architecture for scalable applications.

• Complex Platform Development: Experience in actively developing complex platforms and APIs.

• Peer-to-Peer Technologies: Understanding of Peer-to-Peer technologies.

• Quick Learner: Ability to quickly adapt and learn new technologies.

• Security Awareness: Strong understanding and experience implementing best security practices.

Nice to have

• High-Availability Concepts: Experience with high-availability concepts and best practices for ensuring system reliability.

• Additional Programming Skills: Knowledge of Go, Rust, or C++ is advantageous.

• Familiarity with message queues (Redis), caches, and job queues.

• Mobile Development: Experience in React Native, Flutter or Native mobile development.

Apply Now:

Join Tether and Shape the Future of Digital Finance

Innovate with Tether

Why Join Us?

The Wallet Development Kit (WDK) Software Engineer contributes to Tether's open-source toolkit for building self-custodial wallet applications across mobile and desktop platforms. This position involves technical design, implementation, and collaboration with other

Responsibilities

• Innovative Solutions: Contribute to the creation of groundbreaking projects, utilizing agile methodologies and innovative technologies to create incredible platforms.
• Scalability: Ensure backend services remain effortlessly responsive and real-time, accommodating the platform's continual growth and evolving user base.
• Security: Uphold the highest security standards in all backend processes and services to safeguard our users' assets and data.

• Advanced Node/JavaScript Expertise: +5 years of experience working with Nodejs and JavaScript programming.

• Past experience building or integrating crypto wallets for DeFi and blockchain applications.

• Modular Architecture: Familiarity with modular architecture for scalable applications.

• Complex Platform Development: Experience in actively developing complex platforms and APIs.

• Peer-to-Peer Technologies: Understanding of Peer-to-Peer technologies.

• Quick Learner: Ability to quickly adapt and learn new technologies.

• Security Awareness: Strong understanding and experience implementing best security practices.

Nice to have

• High-Availability Concepts: Experience with high-availability concepts and best practices for ensuring system reliability.

• Additional Programming Skills: Knowledge of Go, Rust, or C++ is advantageous.

• Familiarity with message queues (Redis), caches, and job queues.

• Mobile Development: Experience in React Native, Flutter or Native mobile development.

Apply Now:

Join Tether and Shape the Future of Digital Finance

Innovate with Tether

Why Join Us?

The Wallet Development Kit (WDK) Software Engineer contributes to Tether's open-source toolkit for building self-custodial wallet applications across mobile and desktop platforms. This position involves technical design, implementation, and collaboration with other

Responsibilities

• Innovative Solutions: Contribute to the creation of groundbreaking projects, utilizing agile methodologies and innovative technologies to create incredible platforms.
• Scalability: Ensure backend services remain effortlessly responsive and real-time, accommodating the platform's continual growth and evolving user base.
• Security: Uphold the highest security standards in all backend processes and services to safeguard our users' assets and data.

• Advanced Node/JavaScript Expertise: +5 years of experience working with Nodejs and JavaScript programming.

• Past experience building or integrating crypto wallets for DeFi and blockchain applications.

• Modular Architecture: Familiarity with modular architecture for scalable applications.

• Complex Platform Development: Experience in actively developing complex platforms and APIs.

• Peer-to-Peer Technologies: Understanding of Peer-to-Peer technologies.

• Quick Learner: Ability to quickly adapt and learn new technologies.

• Security Awareness: Strong understanding and experience implementing best security practices.

Nice to have

• High-Availability Concepts: Experience with high-availability concepts and best practices for ensuring system reliability.

• Additional Programming Skills: Knowledge of Go, Rust, or C++ is advantageous.

• Familiarity with message queues (Redis), caches, and job queues.

• Mobile Development: Experience in React Native, Flutter or Native mobile development.

Apply Now:

Join Tether and Shape the Future of Digital Finance

Innovate with Tether

Why Join Us?

The Wallet Development Kit (WDK) Software Engineer contributes to Tether's open-source toolkit for building self-custodial wallet applications across mobile and desktop platforms. This position involves technical design, implementation, and collaboration with other

Responsibilities

• Innovative Solutions: Contribute to the creation of groundbreaking projects, utilizing agile methodologies and innovative technologies to create incredible platforms.
• Scalability: Ensure backend services remain effortlessly responsive and real-time, accommodating the platform's continual growth and evolving user base.
• Security: Uphold the highest security standards in all backend processes and services to safeguard our users' assets and data.

• Advanced Node/JavaScript Expertise: +5 years of experience working with Nodejs and JavaScript programming.

• Past experience building or integrating crypto wallets for DeFi and blockchain applications.

• Modular Architecture: Familiarity with modular architecture for scalable applications.

• Complex Platform Development: Experience in actively developing complex platforms and APIs.

• Peer-to-Peer Technologies: Understanding of Peer-to-Peer technologies.

• Quick Learner: Ability to quickly adapt and learn new technologies.

• Security Awareness: Strong understanding and experience implementing best security practices.

Nice to have

• High-Availability Concepts: Experience with high-availability concepts and best practices for ensuring system reliability.

• Additional Programming Skills: Knowledge of Go, Rust, or C++ is advantageous.

• Familiarity with message queues (Redis), caches, and job queues.

• Mobile Development: Experience in React Native, Flutter or Native mobile development.

Apply Now:

Join Tether and Shape the Future of Digital Finance

Innovate with Tether

Why Join Us?

The Wallet Development Kit (WDK) Software Engineer contributes to Tether's open-source toolkit for building self-custodial wallet applications across mobile and desktop platforms. This position involves technical design, implementation, and collaboration with other

Responsibilities

• Innovative Solutions: Contribute to the creation of groundbreaking projects, utilizing agile methodologies and innovative technologies to create incredible platforms.
• Scalability: Ensure backend services remain effortlessly responsive and real-time, accommodating the platform's continual growth and evolving user base.
• Security: Uphold the highest security standards in all backend processes and services to safeguard our users' assets and data.

• Advanced Node/JavaScript Expertise: +5 years of experience working with Nodejs and JavaScript programming.

• Past experience building or integrating crypto wallets for DeFi and blockchain applications.

• Modular Architecture: Familiarity with modular architecture for scalable applications.

• Complex Platform Development: Experience in actively developing complex platforms and APIs.

• Peer-to-Peer Technologies: Understanding of Peer-to-Peer technologies.

• Quick Learner: Ability to quickly adapt and learn new technologies.

• Security Awareness: Strong understanding and experience implementing best security practices.

Nice to have

• High-Availability Concepts: Experience with high-availability concepts and best practices for ensuring system reliability.

• Additional Programming Skills: Knowledge of Go, Rust, or C++ is advantageous.

• Familiarity with message queues (Redis), caches, and job queues.

• Mobile Development: Experience in React Native, Flutter or Native mobile development.

Apply Now:

Join Tether and Shape the Future of Digital Finance

Innovate with Tether

Why Join Us?

The Wallet Development Kit (WDK) Software Engineer contributes to Tether's open-source toolkit for building self-custodial wallet applications across mobile and desktop platforms. This position involves technical design, implementation, and collaboration with other

Responsibilities

• Innovative Solutions: Contribute to the creation of groundbreaking projects, utilizing agile methodologies and innovative technologies to create incredible platforms.
• Scalability: Ensure backend services remain effortlessly responsive and real-time, accommodating the platform's continual growth and evolving user base.
• Security: Uphold the highest security standards in all backend processes and services to safeguard our users' assets and data.

• Advanced Node/JavaScript Expertise: +5 years of experience working with Nodejs and JavaScript programming.

• Past experience building or integrating crypto wallets for DeFi and blockchain applications.

• Modular Architecture: Familiarity with modular architecture for scalable applications.

• Complex Platform Development: Experience in actively developing complex platforms and APIs.

• Peer-to-Peer Technologies: Understanding of Peer-to-Peer technologies.

• Quick Learner: Ability to quickly adapt and learn new technologies.

• Security Awareness: Strong understanding and experience implementing best security practices.

Nice to have

• High-Availability Concepts: Experience with high-availability concepts and best practices for ensuring system reliability.

• Additional Programming Skills: Knowledge of Go, Rust, or C++ is advantageous.

• Familiarity with message queues (Redis), caches, and job queues.

• Mobile Development: Experience in React Native, Flutter or Native mobile development.

Apply Now:

Join Tether and Shape the Future of Digital Finance

Innovate with Tether

Why Join Us?

The Wallet Development Kit (WDK) Software Engineer contributes to Tether's open-source toolkit for building self-custodial wallet applications across mobile and desktop platforms. This position involves technical design, implementation, and collaboration with other

Responsibilities

• Innovative Solutions: Contribute to the creation of groundbreaking projects, utilizing agile methodologies and innovative technologies to create incredible platforms.
• Scalability: Ensure backend services remain effortlessly responsive and real-time, accommodating the platform's continual growth and evolving user base.
• Security: Uphold the highest security standards in all backend processes and services to safeguard our users' assets and data.

• Advanced Node/JavaScript Expertise: +5 years of experience working with Nodejs and JavaScript programming.

• Past experience building or integrating crypto wallets for DeFi and blockchain applications.

• Modular Architecture: Familiarity with modular architecture for scalable applications.

• Complex Platform Development: Experience in actively developing complex platforms and APIs.

• Peer-to-Peer Technologies: Understanding of Peer-to-Peer technologies.

• Quick Learner: Ability to quickly adapt and learn new technologies.

• Security Awareness: Strong understanding and experience implementing best security practices.

Nice to have

• High-Availability Concepts: Experience with high-availability concepts and best practices for ensuring system reliability.

• Additional Programming Skills: Knowledge of Go, Rust, or C++ is advantageous.

• Familiarity with message queues (Redis), caches, and job queues.

• Mobile Development: Experience in React Native, Flutter or Native mobile development.

Apply Now:

Join Tether and Shape the Future of Digital Finance

Innovate with Tether

Why Join Us?

The Wallet Development Kit (WDK) Software Engineer contributes to Tether's open-source toolkit for building self-custodial wallet applications across mobile and desktop platforms. This position involves technical design, implementation, and collaboration with other

Responsibilities

• Innovative Solutions: Contribute to the creation of groundbreaking projects, utilizing agile methodologies and innovative technologies to create incredible platforms.
• Scalability: Ensure backend services remain effortlessly responsive and real-time, accommodating the platform's continual growth and evolving user base.
• Security: Uphold the highest security standards in all backend processes and services to safeguard our users' assets and data.

• Advanced Node/JavaScript Expertise: +5 years of experience working with Nodejs and JavaScript programming.

• Past experience building or integrating crypto wallets for DeFi and blockchain applications.

• Modular Architecture: Familiarity with modular architecture for scalable applications.

• Complex Platform Development: Experience in actively developing complex platforms and APIs.

• Peer-to-Peer Technologies: Understanding of Peer-to-Peer technologies.

• Quick Learner: Ability to quickly adapt and learn new technologies.

• Security Awareness: Strong understanding and experience implementing best security practices.

Nice to have

• High-Availability Concepts: Experience with high-availability concepts and best practices for ensuring system reliability.

• Additional Programming Skills: Knowledge of Go, Rust, or C++ is advantageous.

• Familiarity with message queues (Redis), caches, and job queues.

• Mobile Development: Experience in React Native, Flutter or Native mobile development.

Apply Now:

Join Tether and Shape the Future of Digital Finance

Innovate with Tether

Why Join Us?

The Wallet Development Kit (WDK) Software Engineer contributes to Tether's open-source toolkit for building self-custodial wallet applications across mobile and desktop platforms. This position involves technical design, implementation, and collaboration with other

Responsibilities

• Innovative Solutions: Contribute to the creation of groundbreaking projects, utilizing agile methodologies and innovative technologies to create incredible platforms.
• Scalability: Ensure backend services remain effortlessly responsive and real-time, accommodating the platform's continual growth and evolving user base.
• Security: Uphold the highest security standards in all backend processes and services to safeguard our users' assets and data.

• Advanced Node/JavaScript Expertise: +5 years of experience working with Nodejs and JavaScript programming.

• Past experience building or integrating crypto wallets for DeFi and blockchain applications.

• Modular Architecture: Familiarity with modular architecture for scalable applications.

• Complex Platform Development: Experience in actively developing complex platforms and APIs.

• Peer-to-Peer Technologies: Understanding of Peer-to-Peer technologies.

• Quick Learner: Ability to quickly adapt and learn new technologies.

• Security Awareness: Strong understanding and experience implementing best security practices.

Nice to have

• High-Availability Concepts: Experience with high-availability concepts and best practices for ensuring system reliability.

• Additional Programming Skills: Knowledge of Go, Rust, or C++ is advantageous.

• Familiarity with message queues (Redis), caches, and job queues.

• Mobile Development: Experience in React Native, Flutter or Native mobile development.

Apply Now:

Join Tether and Shape the Future of Digital Finance

Innovate with Tether

Why Join Us?

The Wallet Development Kit (WDK) Software Engineer contributes to Tether's open-source toolkit for building self-custodial wallet applications across mobile and desktop platforms. This position involves technical design, implementation, and collaboration with other

Responsibilities

• Innovative Solutions: Contribute to the creation of groundbreaking projects, utilizing agile methodologies and innovative technologies to create incredible platforms.
• Scalability: Ensure backend services remain effortlessly responsive and real-time, accommodating the platform's continual growth and evolving user base.
• Security: Uphold the highest security standards in all backend processes and services to safeguard our users' assets and data.

• Advanced Node/JavaScript Expertise: +5 years of experience working with Nodejs and JavaScript programming.

• Past experience building or integrating crypto wallets for DeFi and blockchain applications.

• Modular Architecture: Familiarity with modular architecture for scalable applications.

• Complex Platform Development: Experience in actively developing complex platforms and APIs.

• Peer-to-Peer Technologies: Understanding of Peer-to-Peer technologies.

• Quick Learner: Ability to quickly adapt and learn new technologies.

• Security Awareness: Strong understanding and experience implementing best security practices.

Nice to have

• High-Availability Concepts: Experience with high-availability concepts and best practices for ensuring system reliability.

• Additional Programming Skills: Knowledge of Go, Rust, or C++ is advantageous.

• Familiarity with message queues (Redis), caches, and job queues.

• Mobile Development: Experience in React Native, Flutter or Native mobile development.

Apply Now:

Join Tether and Shape the Future of Digital Finance

Innovate with Tether

Why Join Us?

The Wallet Development Kit (WDK) Software Engineer contributes to Tether's open-source toolkit for building self-custodial wallet applications across mobile and desktop platforms. This position involves technical design, implementation, and collaboration with other

Responsibilities

• Innovative Solutions: Contribute to the creation of groundbreaking projects, utilizing agile methodologies and innovative technologies to create incredible platforms.
• Scalability: Ensure backend services remain effortlessly responsive and real-time, accommodating the platform's continual growth and evolving user base.
• Security: Uphold the highest security standards in all backend processes and services to safeguard our users' assets and data.

• Advanced Node/JavaScript Expertise: +5 years of experience working with Nodejs and JavaScript programming.

• Past experience building or integrating crypto wallets for DeFi and blockchain applications.

• Modular Architecture: Familiarity with modular architecture for scalable applications.

• Complex Platform Development: Experience in actively developing complex platforms and APIs.

• Peer-to-Peer Technologies: Understanding of Peer-to-Peer technologies.

• Quick Learner: Ability to quickly adapt and learn new technologies.

• Security Awareness: Strong understanding and experience implementing best security practices.

Nice to have

• High-Availability Concepts: Experience with high-availability concepts and best practices for ensuring system reliability.

• Additional Programming Skills: Knowledge of Go, Rust, or C++ is advantageous.

• Familiarity with message queues (Redis), caches, and job queues.

• Mobile Development: Experience in React Native, Flutter or Native mobile development.

Apply Now:

Join Tether and Shape the Future of Digital Finance

Innovate with Tether

Why Join Us?

The Wallet Development Kit (WDK) Software Engineer contributes to Tether's open-source toolkit for building self-custodial wallet applications across mobile and desktop platforms. This position involves technical design, implementation, and collaboration with other

Responsibilities

• Innovative Solutions: Contribute to the creation of groundbreaking projects, utilizing agile methodologies and innovative technologies to create incredible platforms.
• Scalability: Ensure backend services remain effortlessly responsive and real-time, accommodating the platform's continual growth and evolving user base.
• Security: Uphold the highest security standards in all backend processes and services to safeguard our users' assets and data.

• Advanced Node/JavaScript Expertise: +5 years of experience working with Nodejs and JavaScript programming.

• Past experience building or integrating crypto wallets for DeFi and blockchain applications.

• Modular Architecture: Familiarity with modular architecture for scalable applications.

• Complex Platform Development: Experience in actively developing complex platforms and APIs.

• Peer-to-Peer Technologies: Understanding of Peer-to-Peer technologies.

• Quick Learner: Ability to quickly adapt and learn new technologies.

• Security Awareness: Strong understanding and experience implementing best security practices.

Nice to have

• High-Availability Concepts: Experience with high-availability concepts and best practices for ensuring system reliability.

• Additional Programming Skills: Knowledge of Go, Rust, or C++ is advantageous.

• Familiarity with message queues (Redis), caches, and job queues.

• Mobile Development: Experience in React Native, Flutter or Native mobile development.

Apply Now:

About aPriori

aPriori is an MEV infrastructure and liquid staking protocol, designed for the parallel execution era and natively built on Monad. We are building the foundational infrastructure for the next era of decentralized finance, helping stakers, protocols and validators maximize yield with transparency and efficiency. Our team is composed of experts in high-performance trading, DeFi protocols, distributed systems, and blockchain infrastructure.

The Role

We’re looking for a strong Senior or Staff Backend Engineer passionate about solving complex problems with high-performance solutions. You will play a pivotal role in our journey from testnet to mainnet, with significant ownership in all stages from design, development, deployment, and maintenance. You’ll work closely with a highly experienced, crypto-native team to architect and implement performant backend systems.

What You’ll Do

• Design, build, and maintain scalable, mission-critical backend services and APIs powering liquid staking, mev infrastructure and other foundational DeFi systems
• Work on high-performance systems that interact with blockchain networks in real-time
• Collaborate with smart contract engineers, frontend engineers, and leadership to ship end-to-end features
• Contribute to technical decisions and engineering culture across the stack, including system architecture and design patterns

What We’re Looking For

• 4-10 years of backend software engineering experience in one of the following: Golang, Rust, C/C++, Python, Java, Node.js
• Experience in designing, developing, and maintaining scalable, high-performance backend systems and public-facing APIs
• Experience in managing and optimizing databases like PostgreSQL to ensure data integrity, enhance performance, and achieve scalability
• Excellent communication and collaboration skills
• Strong sense of ownership and a passion for driving complex technical decisions
• Ability to move fast and ship software to production with rapid iteration
• Academic background from a top-tier university and/or experience at a well-regarded technology company is a strong plus.

Nice to Haves:

• Experience in building backend systems interacting with blockchains
• Experience designing and developing liquid staking solutions, dexes and/or mev infra in production
• Knowledge of blockchain infrastructure, validator clients and p2p networking
• Deep knowledge of DeFi legos

Why Join Us

• Work at the frontier of crypto and DeFi infrastructure
• Join a tight-knit, low-ego team with deep technical chops
• Competitive compensation, bonus and token upside
• Fully remote, flexible work culture

We are looking for a highly technical Developer Relations Engineer who is passionate about blockchain development and interoperability. This role is not just about engaging with the community—it’s about building, teaching, and supporting developers in integrating ZetaChain’s technology into their projects. You will be hands-on with Solidity, and other smart contract languages, creating technical content, supporting developer teams, and growing the ZetaChain ecosystem.

What You’ll Do

• Developer Engagement & Advocacy
  • Build relationships with developers and projects to help them successfully integrate ZetaChain.
  • Provide hands-on technical support to teams building universal applications on ZetaChain.
  • Manage and engage in developer communities (Discord, GitHub, X, Telegram) by answering questions, sharing insights, and gathering feedback.
  • Focus on outreach and content, with about 70% “relational” work (e.g., community engagement) and 30% coding.
• Technical Content & Education
  • Write deep-dive blog posts, tutorials, and technical documentation to guide developers in building cross-chain applications.
  • Conduct live coding sessions, workshops, and webinars to onboard new developers.
• Hackathons, Bounties & Developer Acceleration
  • Organize online hackathons and developer bounties to foster innovation.
  • Support early-stage projects building on ZetaChain through mentorship and funding initiatives.
  • Design challenge tracks for developer events, ensuring they align with ZetaChain’s strategic goals.
• Ecosystem & Tooling Support
  • Collaborate with external service providers to improve the developer experience on ZetaChain.
  • Work closely with the engineering team to provide developer feedback and improve ZetaChain’s protocol and tools.

What You Bring

• Strong Technical Background
  • Proficiency in Solidity (required), with experience writing and deploying smart contracts.
  • Familiarity with TypeScript, Rust and Move (optional).
  • Experience working with blockchain node infrastructure, RPCs, and cross-chain messaging.
• Developer Relations & Community Building
  • Experience in DevRel, Developer Advocacy, or Technical Education.
  • Experience managing developer communities and providing technical support.
  • Strong communication skills and ability to explain complex technical topics clearly.
• Startup & Ecosystem Growth Mindset
  • Proactive, self-motivated, and comfortable working in a fast-moving environment.
  • Excited about interoperability, cross-chain development, and universal apps.
  • Passion for open-source projects and contributing to the blockchain ecosystem.
• Travel Requirements
  • This position requires frequent travel to attend conferences, hackathons, and developer events globally.
  • Must be eligible to travel to the US without a VISA.
  • Candidates based in San Francisco (SF) or New York City (NYC) will be prioritized, but we are open to exceptional candidates from other locations.

Compensation

Base Salary: $135,000 – $175,000 (San Francisco benchmark)

In addition to the base salary, all full-time team members receive an additional 10% to 25% in liquid benefits with upside based on role, experience, and impact. We believe in building together and sharing in the long-term success of the network. Compensation packages are designed to be competitive and aligned with the growth of both the team and the ecosystem.

As the Protocol Engineering Lead at ZetaChain, you will be responsible for driving the architecture, design, and development of our core blockchain protocol. You will lead a team of talented blockchain engineers, guiding the technical direction of the protocol and ensuring it meets the highest standards of performance, and security. This role requires deep expertise in blockchain systems, and strong leadership.

Responsibilities

• Lead the design, development, and optimization of the protocol, ensuring code quality, maintainability, and performance.
• Make key architectural decisions and guide long-term protocol strategy in alignment with the company’s goals.
• Manage and mentor a high-performing team of blockchain engineers, fostering a culture of excellence, ownership, and collaboration.
• Drive technical planning, execution, and delivery of the protocol SDLC including CI testing and mainnet upgrades.

Experience

• 6+ years of software development experience
• 3+ years of blockchain protocol experience, including Cosmos SDK or similar ecosystems
• Prior experience leading and mentoring engineering teams, with a strong sense of ownership
• Deep understanding of distributed systems, consensus algorithms, and performance optimization
• You are not expected to be an expert in all smart contract languages but strong Solidity knowledge is a must.
• Smart contract experience from chains like Solana, SUI, Bitcoin, or TON is a huge plus

Our tech stack

We’re a polyglot team and value engineers who can navigate across boundaries but you are not expected to be an expert in every area. Our core stack includes:

• Smart contracts: Solidity, Rust (Solana), Move (SUI), FunC (TON)
• Protocol: Go (Cosmos SDK, geth, btcsuite)
• CI/Infra: Docker, Kubernetes, GitHub Actions

Location

Hybrid position in San Francisco is preferred but open to excellent candidates remotely in US or EU regions only.

Compensation

Base Salary: $150,000 – $200,000 (San Francisco benchmark)

In addition to the base salary, all full-time team members receive an additional 10% to 25% in liquid benefits with upside based on role, experience, and impact. We believe in building together and sharing in the long-term success of the network. Compensation packages are designed to be competitive and aligned with the growth of both the team and the ecosystem.

Aptos is a people-first blockchain on a mission to help billions of people achieve universal and fair access to decentralized assets in a safe and scalable way. Founded by some of the original creators and maintainers that researched, designed, and built the Diem blockchain to serve this purpose, we have dedicated several years toward this mission. We believe the open-source Diem technology we have developed is an important foundation of a safe and scalable web3 world where everyone has more equitable opportunities to grow and access financial assets with lower fees and fewer intermediaries.   Aptos (Ohlone for "The People") encompasses our mission and ethos for why we build.About The Role We’re looking for a talented, eager, and hungry Developer Relations Engineer to support the growing developer community for Aptos.  This role will be a highly visible role in the organization and in the broader ecosystem. You will not only manage our day-to-day online presence, you will also be responsible for keeping your finger on the pulse of what’s happening in the broader crypto ecosystem. You will help with hiring and training a team of global developer relations engineers. You should love community-building and have a knack for developing online relationships. You will be joining a lean team, and this role will have a lot of autonomy – you should be a self-starter and be capable of self-directed work. What you'll be doing:

Collaborating with integration partners to design and launch new web3 protocols built on Aptos Improving developer experience by creating developer focused tooling, tutorials, documentation and blog posts Contributing to the technical design and implementation of new products and protocols on Aptos Coordinating, presenting at, and participating in meetups, hackathons, and conferences around the world Developing developer community engagement and growth plan Setting up the right systems and processes to ensure successful developer community building and participation Staying active and engaged on topics of cryptocurrency and NFTs, and interested in continuously learning about various types of these assets Working autonomously in a fast-paced, highly collaborative environment with an emphasis on cross-team communication

What we’re looking for:

Experience with internet culture, memes, Discord and Twitter Experience with programming languages such as Rust, Move, TypeScript  Relevant background in a marketing and/or developer role, with experience developing successful campaigns in various forms, such as social media campaigns, product launches, and more Excellent written and oral communication skills, as this role requires frequent communication to members of our community, members of our team, and various third parties

  The base salary range for this full-time position is $130k - $210k. The range displayed on each job posting reflects the minimum and typical maximum target for new hire salaries for the position of a candidate based in the Bay Area at any level. We do hire exceptionally talented professionals with decades of experience in their field. As such, our range may be higher than what is displayed. Our base salary ranges are determined by experience and location, and we hire at all levels for multiple roles. Within the range, individual pay is determined by work location, job-related skills demonstrated during the interviews, working experience, and relevant education or training. Please note that the compensation details listed in role postings reflect the base salary only and do not include equity, tokens, or benefits.Our Benefits

100% insurance premium coverage for medical, dental, and vision for you and your dependents (US Employees) Equipment of your choice Flexible vacation time, 11 holidays, and floating company days off  Competitive Salary Equity (RSUs) (US employees) Protocol Token Grants 401k matching (US Employees) Fun and inclusive in-person and digital events

Aptos is committed to diversity in the workplace, and we’re proud to be an Equal Opportunity Employer. We do not hire on the basis of race, color, religion, creed, gender, national origin, citizenship, age, disability, veteran status, marital status, pregnancy, parental status, sex, gender expression or identity, sexual orientation, or any other basis protected by local, state or federal law. All employment is decided based on qualifications, merit, and business need.

We are committed to providing a safe and secure hiring process for all applicants. Unfortunately, there are individuals who may attempt to impersonate Aptos or our employees for fraudulent purposes.To protect yourself, please be aware of the following:

We will never ask you for payment of any kind during the application or onboarding process, including fees for background checks, training, or equipment. We will always communicate with you using our official company email domain. We will never request your personal financial information, such as your social security number or bank account details, during the initial application stages or via email or a video/voice call when onboarding.

Apply Now:

DFINITY is seeking a Senior Frontend Software Engineer to join the team building Caffeine, an innovative AI-driven no-code platform. Caffeine will empower everyday users to design, develop, and deploy software applications on the Internet Computer (IC), a revolutionary decentralized and serverless alternative to traditional cloud compute platforms. Are you new to decentralization or not an expert in blockchain or cryptography? That’s okay! We have some of the world’s foremost experts and they’re excited to share their knowledge. You bring your awesome skills and help us create something amazing. * Please note that this role requires in-office work from our amazing office in San Francisco 3 days per week. What you’ll work on: You’ll own the complete software development lifecycle for key products, including:

Caffeine: A user-friendly tool empowering both technical and non-technical users to create and deploy SaaS applications using natural language prompts ICP Ninja: A web-based IDE designed for new ICP developers, simplifying and accelerating software development and deployment on the Internet Computer

You’ll primarily work in TypeScript, Node.js, React and other modern frontend technologies. Responsibilities:

Design and develop sophisticated and user-friendly interfaces for enhanced developer and user experiences Take end-to-end ownership of features, from initial concept to final deployment, working closely with designers Play a key role in shaping UI architecture and maintaining shared component libraries Work with backend developers to create well-integrated APIs and system functionalities At times, contribute to backend development (in Rust) to ensure comprehensive product delivery

You May Be a Great Fit If You:

Possess a strong foundation in computer science (degree or equivalent) Have significant experience leading frontend or full-stack engineering initiatives Have a proven track record of shipping web applications for both B2B and B2C audiences Have strong proficiency in modern frontend development using JavaScript/TypeScript and frameworks such as React Are proactive and willing to contribute to backend development as necessary. Prioritize user experience and the creation of maintainable code Can effectively collaborate within a diverse, multi-time zone team environment. Exhibit excellent interpersonal and communication abilities Are excited by the potential of democratizing software engineering and building a more resilient internet

Bonus Points:

Experience working with the Internet Computer or other blockchains   Contributions to open-source projects Experience building products around large language models (LLMs) 

More information about what you'll be working on:

Internet Computer Read about Caffeine in the ICP 2025 Roadmap and watch Where AI Builds to learn more about what this team is working on.  Try icp.ninja to see how the Internet Computer makes developing and deploying applications a streamlined process.

Base Salary Range:  $175,000 - $235,000/yr This position can be considered across multiple levels. Total compensation at DFINITY consists of base salary + generous bonus and is determined based on multiple factors including job leveling, areas of expertise, educational background, geographic location and overall experience.   In addition to the cash components of our offers, we have generous benefits including top tier medical, dental, and vision insurance; disability insurance; life insurance; 401(k); flexible PTO policy in addition to paid holidays.About DFINITY and the Internet Computer:

DFINITY is a leading contributor to the Internet Computer Protocol (ICP), with a mission to bring the world's compute onto the secure ICP network. Built on its unique third-generation blockchain technology, ICP enables the development and operation of a new generation of unstoppable, tamper-proof, fully decentralized web applications. Its powerful technology can run entire AI models within smart contracts, representing a major advancement for secure AI. Through seamless integration with Bitcoin, Ethereum, and other networks, ICP facilitates multi-chain operations for digital assets and web3. Join our team of over 250 talented individuals, including world-renowned cryptographers, distributed systems engineers, programming language experts, and industry leaders, who are shaping the future of the internet and web3.

DFINITY was founded in 2016 by entrepreneur and crypto theoretician, Dominic Williams.All qualified applicants will receive consideration for employment without regard to race, color, religion, gender, gender identity or expression, sexual orientation, national origin, genetics, disability, age, or veteran status.

Apply Now:

DFINITY is seeking a Senior Backend Software Engineer to join the team building Caffeine, an innovative AI-driven no-code platform. Caffeine will empower everyday users to design, develop, and deploy software applications on the Internet Computer (IC), a revolutionary decentralized and serverless alternative to traditional cloud compute platforms. Are you new to decentralization or not an expert in blockchain or cryptography? That’s okay! We have some of the world’s foremost experts and they’re excited to share their knowledge. You bring your awesome skills and help us create something amazing.* Please note that this role requires in-office work from our amazing office in San Francisco 3 days per week. What you’ll work on: You’ll own the complete software development lifecycle for key products, including:

Caffeine: A user-friendly tool empowering both technical and non-technical users to create and deploy SaaS applications using natural language prompts ICP Ninja: A web-based IDE designed for new ICP developers, simplifying and accelerating software development and deployment on the Internet Computer CaLM (Canister Lifecycle Manager) – a build, deploy, and monitoring service for managing the entire lifecycle of IC smart contracts 

You’ll primarily work in Rust, TypeScript,Node,js, and other modern backend technologies. Responsibilities:

Develop robust, secure, and scalable backend systems and services using Rust and TypeScript Manage the entire feature lifecycle, from initial concept and design through implementation and ongoing support Collaborate with platform engineering teams to deploy and maintain production services Design and implement CI/CD pipelines for rapid product iteration as user adoption increases Collaborate with other engineers and business stakeholders to define and deliver high-impact solutions Mentor fellow engineers to promote knowledge sharing and teamwork. Contribute to frontend codebases (TypeScript) and SDKs as needed to ensure complete product delivery

You might be a great fit if you:

Possess a strong foundation in computer science (degree or equivalent) Have extensive experience leading full-stack engineering projects Demonstrate strong proficiency in modern backend development languages, including TypeScript, Go, Python, and Rust Have experience designing and building REST APIs for B2B and B2C applications Have a proven track record of building distributed systems, developer tools, or user-facing products Are curious and comfortable contributing to frontend development as needed Can effectively collaborate in a multi-disciplinary team across multiple time zones Exhibit excellent interpersonal and communication skills Are passionate about democratizing software engineering and building a more resilient internet

Bonus Points:

Proven experience developing backend applications using Rust Active contributions to open-source software projects Experience in building products leveraging large language models (LLMs) Familiarity with the Internet Computer or other blockchain technologies

More information about what you'll be working on:

Internet Computer Read about Caffeine in the ICP 2025 Roadmap and watch Where AI Builds to learn more about what this team is working on. Try icp.ninja to see how the Internet Computer makes developing and deploying applications a streamlined process.

Base Salary Range:  $175,000 - $235,000/yr This position can be considered across multiple levels. Total compensation at DFINITY consists of base salary + generous bonus and is determined based on multiple factors including job leveling, areas of expertise, educational background, geographic location and overall experience.   In addition to the cash components of our offers, we have generous benefits including top tier medical, dental, and vision insurance; disability insurance; life insurance; 401(k); flexible PTO policy in addition to paid holidays.About DFINITY and the Internet Computer:

DFINITY is a leading contributor to the Internet Computer Protocol (ICP), with a mission to bring the world's compute onto the secure ICP network. Built on its unique third-generation blockchain technology, ICP enables the development and operation of a new generation of unstoppable, tamper-proof, fully decentralized web applications. Its powerful technology can run entire AI models within smart contracts, representing a major advancement for secure AI. Through seamless integration with Bitcoin, Ethereum, and other networks, ICP facilitates multi-chain operations for digital assets and web3. Join our team of over 250 talented individuals, including world-renowned cryptographers, distributed systems engineers, programming language experts, and industry leaders, who are shaping the future of the internet and web3.

DFINITY was founded in 2016 by entrepreneur and crypto theoretician, Dominic Williams.All qualified applicants will receive consideration for employment without regard to race, color, religion, gender, gender identity or expression, sexual orientation, national origin, genetics, disability, age, or veteran status.

Apply Now:

About CoW DAO

CoW DAO is on a mission to protect Ethereum users from MEV and optimize trade execution across DeFi. We achieve this through the CoW Protocol, CoW Swap (a leading intent-based DEX aggregator), and the innovative MEV Blocker, which together help secure, aggregate, and route trades for optimal outcomes. We also fund values-aligned projects via the CoW Grants Program.

CoW Protocol is consistently ranked among the top DEX aggregators by monthly volume and is the largest intent-based exchange. Our MEV Blocker protects trades from harmful MEV extraction and is integrated across the Ethereum ecosystem. The CoW AMM is the only live AMM designed to protect liquidity providers from LVR (loss-versus-rebalancing).

With over 100 open-source repositories on GitHub, we’re transparent, community-driven, and deeply committed to the open-source ethos. Our real-time Dune Analytics dashboard showcases billions in cumulative trading volume and a rapidly growing user base. As we continue to scale, CoW DAO remains at the forefront of DeFi innovation, prioritizing security, efficiency, and decentralization.

Learn more

About the role

Location: We are a fully remote team, and although we hire almost globally, there is a preference for this role to be based in Europe or remote +/- 4 hours CEST time

Please note we’re not hiring from the US, Australia, or New Zealand

Position: Full-time contractor

We need a Site Reliability Engineer who’s hungry for impact, loves building things from scratch, and enjoys keeping critical infrastructure running like a well-oiled machine. You’ll be working with a team that values autonomy, ownership, and a growth mindset—if that sounds like you, keep reading! 🚀

What You’ll Do

• Keep things running smoothly – You’ll build, maintain, and optimize our Kubernetes workloads while ensuring scalable, resilient cloud infrastructure using Infrastructure-as-Code
• Build cool stuff – Automate deployments, reduce tech debt, and optimize AWS costs to improve infrastructure efficiency
• Shape the future of DevOps at CoW – Drive CI/CD workflow standards, contribute to platform architecture & security, and enhance on-call and postmortem processes to foster a strong DevOps culture
• Strengthen our blockchain infrastructure – Deploy and manage Ethereum nodes & validators, establish SLAs, and ensure high availability across our network
• Own reliability metrics – Establish SLIs/SLOs for our solver competition, RPCs, and trades; build and manage error budgets with stakeholders
• Lead operational excellence – Rotate with the on-call team, lead blameless retrospectives, and automate runbooks to continuously improve resilience
• Teach and share – We love knowledge sharing! Be ready to collaborate, mentor, and even lead a small presentation for the team
• Automate and optimize – Modify and extend Pulumi configurations for AWS, fine-tune deployments, and continuously improve alerting solutions
• Enhance observability & security – Improve logging architecture, security measures, and database health to ensure reliable infrastructure performance

Our Tech Stack

• Our SRE Stack: AWS, Kubernetes, Pulumi, Flux, Ansible, OpenSearch, Nginx, Prometheus, Grafana, Docker and Linux
• Blockchain Nodes: Erigon, Reth, Nitro

Who You Are

• Kubernetes Mastery – You’ve deployed and maintained production-grade K8s clusters before
• Cloud & DevOps Expertise – Strong experience with AWS, CI/CD, Docker, and Linux
• Blockchain Expertise? Even Better! – Experience running Ethereum nodes (or other blockchain infra) is a plus.
• On-Call Ready – You’re comfortable handling incidents and making sure things don’t break (or fixing them fast if they do!)
• Monitoring Pro – You know your way around Prometheus, Grafana, and Elasticsearch
• Database Knowledge – We use Postgres, but any database experience is a plus
• Coding Background – You’ve written production-level code in Python, Go, Rust, or similar for at least 1-2 years
• Team Player & Communicator – We’re a remote team, so documentation, knowledge sharing, and collaboration are key

What We Can Offer You

• Impact & Ownership – Your work will directly shape the future of DeFi.
• Flexibility – Remote-friendly with the option to join our Lisbon hub
• Token Plan – Be part of our mission and shape the future of CoW DAO
• Team Gatherings – Regular meetups & off-sites retreats to connect IRL.
• Well-being Learning Budget – We support your growth, mental health, active life style
• Hardware Budget – Get the setup you need to Moo 🐮

Ready to Join the Herd?

Hit that apply button and let’s chat! 🚀

Referral Program

Earn 5.000 USDC or USD with the refer-to-earn program. More details here.

Culture

Life within the CoW Protocol is an incredible adventure! We take pride in our collaborative approach, embracing autonomy and fostering a culture of big thinking and continuous growth. We value impact, ownership, simplicity, and team spirit. Plus, we’re all about feedback, coming together, and enjoying the journey along the way!

At CoW Protocol, we strive to create a space where everyone feels included and empowered. We believe that our products and services benefit from our diverse backgrounds and experiences. All qualified applicants are considered for positions regardless of race, ethnic origin, age, religion or belief, marital status, gender identification, sexual orientation, or physical ability.