The Monad Foundation is a team of dedicated ecosystem and community builders who are on a mission to massively grow the impact of decentralized tech. We believe that the Monad blockchain--the performant and parallel EVM Layer 1--will help decentralized apps eat the world.

The Role

We're seeking a passionate and experienced Developer Relations Engineer to spearhead the growth and support of Monad's mobile developer community. You'll be at the forefront of empowering ambitious builders, providing them with the essential tools, resources, and guidance to create best-in-class mobile applications within the innovative Monad ecosystem. 

What You Will Do

• Champion Mobile Development on Monad by developing and delivering high-quality educational resources specifically tailored for mobile developers (e.g. blog posts, videos, tooling, tutorials, documentation, sample code, guides)

• Evangelize the power and potential Monad’s technology to developers with clear communication at conferences and hackathons

• Lead and support impactful initiatives such as mobile-focused hackathons, specialized builder programs, and industry events to foster a vibrant and collaborative developer community

• Actively grow and manage Monad's developer communities (e.g., Discord, Telegram, forums) by fostering a welcoming and supportive environment for mobile developers

• Keep abreast of the latest trends and best practices in mobile development (iOS and Android) and the broader Web3 space to ensure our resources and strategies remain cutting-edge

Who You Are

• 2+ years of proven experience in developer relations, with a strong interest and knowledge of the web3 ecosystem

• 3+ years of experience as a mobile developer, in Android or iOS

• Strong understanding of technical concepts, programming languages, and development workflow

• Technically opinionated on what it takes to ship a dapp on mobile

• Prior app development experiencDDevee, as evidenced with personal and professional projects (e.g. Github)

• Technical writing experience

• Degree in Computer Science/Engineering or equivalent experience

Personal Attributes

• Low ego

• Independence

• Organizational skills

• Extremely strong work ethic

• A desire to bring people together

• Enthusiasm for Monad’s mission of helping decentralization scale

Nice to Have

• Web3 experience

• Public speaking or teaching experience

• Hackathon circuit experience, as a participant!

• Existing relationships with builder communities, incubators, or university blockchain groups

Why Work with Us

• Challenging problems. You’ll work on extremely challenging problems with massive impact.

• Huge opportunity. The Ethereum Virtual Machine (EVM) standard is ubiquitous, but existing EVM-compatible chains are slow and bandwidth-constrained. Monad’s core innovations offer developers the best of both worlds (portability and performance) and are a game-changer for mass user adoption in crypto.

• The right team. You’ll be part of an exceptional and highly-motivated team

• Culture. We’re a lean team working together to achieve very ambitious goals. We are united in our culture of collaboration, low ego, and high-quality output. As an early member of our team, you’ll help continue to shape our culture.

Salary and Benefits

Benefits for full-time employees may include medical, dental, and vision insurance (100% coverage for employees); generous paid time off; paid parental leave; and 10 company-observed holidays.

Apply Now:

The Monad Foundation is a team of dedicated ecosystem and community builders who are on a mission to massively grow the impact of decentralized tech. We believe that the Monad blockchain--the performant and parallel EVM Layer 1--will help decentralized apps eat the world.

The Role

We are looking for a Developer Relations Engineer to focus on growing and supporting Monad’s early builder community. You will unlock a community of ambitious builders by giving them the tools and resources to build successful apps in the Monad ecosystem.

What You Will Do

• Design, develop, and maintain high-quality, production-ready sample applications and reference implementations on Monad. These projects will serve as the benchmark for best practices, demonstrating optimal architecture, security, and user experience for other developers

• Create and distribute high-impact educational resources (e.g., insightful blog posts, engaging videos, practical tooling derived from your builds, comprehensive tutorials, clear documentation) that showcase best practices and efficient workflows, using your exemplary apps as case studies

• Share your expertise, learnings, and the "why" behind your applications with the developer community through presentations at conferences, workshops, webinars, and in-depth code walkthroughs

• Translate your hands-on building experiences and technical insights into actionable feedback for our product and engineering teams, directly influencing the Monad roadmap and tooling

• Leverage your deep development experience to create guides and architectural blueprints that offer strong, well-reasoned opinions on the best ways to build robust and scalable applications on Monad

Who You Are

• 2+ years in developer relations at a web3 company

• 2+ years of software development experience, marked by a strong portfolio of shipped applications where you played a key role in design and implementation. Throughout these years, you have cultivated and consistently demonstrated a passion for writing clean, maintainable, well-documented code, and instinctively architect solutions designed to serve as robust and clear examples for other developers.

• You profoundly understand the challenges developers face and are driven to create solutions, code examples, and resources that genuinely improve their productivity and the quality of their work

• You possess a natural curiosity for trying out different development tools, frameworks, and platforms, and can critically assess their impact on the development lifecycle and final product

• You've formed strong, evidence-based opinions on what makes a great developer experience and robust application architecture, and can effectively communicate how tools and platforms can be improved

• Prior app development experience, as evidenced with personal and professional projects (e.g. Github, Hackathons)

• Degree in Computer Science/Engineering or equivalent experience

Personal Attributes

• Low ego

• Independence

• Organizational skills

• Extremely strong work ethic

• A desire to bring people together

• Enthusiasm for Monad’s mission of helping decentralization scale

Nice to Have

• Public speaking or teaching experience

• Hackathon circuit experience, as a participant!

• Existing relationships with builder communities, incubators, or university blockchain groups

Why Work with Us

• Challenging problems. You’ll work on extremely challenging problems with massive impact.

• Huge opportunity. The Ethereum Virtual Machine (EVM) standard is ubiquitous, but existing EVM-compatible chains are slow and bandwidth-constrained. Monad’s core innovations offer developers the best of both worlds (portability and performance) and are a game-changer for mass user adoption in crypto.

• The right team. You’ll be part of an exceptional and highly-motivated team

• Culture. We’re a lean team working together to achieve very ambitious goals. We are united in our culture of collaboration, low ego, and high-quality output. As an early member of our team, you’ll help continue to shape our culture.

Salary and Benefits

Benefits for full-time employees may include medical, dental, and vision insurance (100% coverage for employees); generous paid time off; paid parental leave; and 10 company-observed holidays.

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're looking for an experienced DevSecOps Engineer to join our team reporting to a Director of Engineering, you'll be responsible for:

Designing/Architecting, Implementing, and supporting end to end CI/CD systems for mission critical distributed application deployments on Zscaler Private and Public clouds such as AWS, GCP Assisting developers with merging, resolving conflicts, creating and managing pre-commit hooks and own administration for DevSecOps tools such as (GitLab, GitHub, Bitbucket, Bamboo, Jenkins, Grafana, Prometheus, Artifactory, ArgoCD/Flux, etc)  Security of the code, applications and infrastructure with a strong working experience in Security scanning (SAST/SCA/DAST) tools such as SonarQube, Snyk, BlackDuck, Coverity, CheckMarx, TruffleHog, etc Automating infrastructure provisioning and configuration (IaC) using tools like Terraform, Chef, Ansible, Puppet, etc Tracking and monitoring build metrics such as code coverage, build times, build queue times, usage/consumption for build agents, and chart them over time using tools such as Prometheus, Grafana, CloudWatch, Splunk, Loki, etc

What We're Looking for (Minimum Qualifications)

You would need a Bachelor of Engineering/Technology degree in Computer Science, Information Technology, or related field with at least 4 years hands-on experience in managing AWS, Google Cloud (GCP) and/or Private Cloud Environments Strong application development/Automation experience with one of the OOPS languages C/C++/Java/Python/GO Experience with SAST, SCA, DAST, Secret scans and familiarity with scanning tools such as SonarQube, Snyk, Coverity, BlackDuck, CheckMarx, TruffleHog, etc Experience with container orchestration technologies such as Docker, Podman, Kubernetes, EKS/GKE and proficiency in automation using tools such as Terrafrom, CloudFormation, Ansible, Chef, Puppet, etc Experience with Git and GitOps based pipelines using GitLab, GitHub, Bitbucket and CI automation tools like Jenkins, GitHub actions, Bamboo

What Will Make You Stand Out (Preferred Qualifications)

Experience writing and developing yaml based CI/CD Pipelines using GitLab, GitHub and knowledge of build tools like makefiles/gradle/npm/maven etc Experience with Networking, Load Balancers, Firewalls, Web Security Experience with AI and ML tools in day to day DevSecOps activities

LI-Onsite

LI-AC10At 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:

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 currently searching for a Senior Golang Engineer who will play a pivotal role in development of the off-chain part of the project.

What you’ll do

• Participate in all phases of backend development, including requirements analysis, software design, implementation, documentation, and unit testing.
• Communicate effectively with the team and company partners.
• Integrate new features into the existing codebase.
• Contribute to the estimation, planning, and execution of projects, features, and integrations.
• Review code written by other team members.

Who you are

• Experienced in building web applications with Golang and using Goroutines for concurrency
• Comfortable working with PostgreSQL via the pq library
• Skilled in both relational (PostgreSQL, MySQL) and NoSQL (MongoDB, Redis) databases
• Able to design and optimize scalable database schemas
• Proficient with Docker and familiar with GitHub CI/CD and basic Kubernetes
• Confident using Git for version control (branching, merging, pull requests)
• Writes solid unit and integration tests using Go or similar frameworks
• Understands and applies web security best practices
• Organized and collaborative, with experience using tools like ClickUp for project Management

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:

About Mangrove

Mangrove is a next-generation order book DEX where liquidity providers can post programmable offers. By linking arbitrary smart contracts to liquidity, Mangrove opens up a novel design space for DeFi infrastructure and composability. We’re backed by top investors in the space and value expertise, creativity, autonomy, and deep technical curiosity.

We are looking for a Fullstack Blockchain Developer to join our core engineering team. The role is full-time, ideally based in Paris, but remote-friendly for the right candidate.

What you’ll do

As a Fullstack Developer at Mangrove, you will be responsible for building both frontend interfaces and backend services, and we mean it. This is a true fullstack role where you’ll be central to the project’s success, supporting Mangrove’s new CLOB-as-a-Service branch, already backed by several top-tier partners.

You will:

• Build modular, performant frontends (React/Next.js) and cleanly integrate with backend and smart contracts
• Design and maintain backend services (Node.js/TypeScript) supporting complex trading logic
• Collaborate with smart contract engineers to bridge protocol mechanics with user-facing tools
• Develop and implement new strategies based on research insights
• Contribute to Mangrove’s technical and product direction
• Scale, monitor, test, and optimize production systems in a fast-paced DeFi environment

Requirements

• Solid full-stack Web3 dev (frontend + backend)
• DeFi and crypto power user, eager to learn
• Expert in React, TypeScript, and modern frameworks
• Skilled with EVM contracts using ethers.js, wagmi, or viem
• Experience with Hono, Ponder, and on-chain data indexing
• Built and shipped live DeFi products with real users
• Clean, tested code; autonomous and fast-paced mindset
• Fluent in English and partially available during CET hours

Nice to have

• Experience with smart contract development (Solidity)
• Passion for DeFi, trading, or low-level protocol design

What does Mangrove offer?

• Competitive salary + equity/tokens
• High-impact, full-ownership role
• Full autonomy to build and ship
• Work with a top-tier team, including PhDs and DeFi veterans
• Team retreats and conferences
• Shape the future of on-chain trading

How to apply

We keep it simple:

1. Apply – Send us your GitHub, portfolio, CV, or any project you’re proud of
2. Intro call – 20 minutes to get to know each other
3. Technical test – Tailored to your full-stack Web3 skills
4. Final interview – Meet the team and dive deeper
5. Offer – Welcome to the team

Send your application to email.

Links

• Website
• Docs
• Twitter
• GitHub

Equal Opportunity

Mangrove is committed to fostering a diverse and inclusive work environment. We encourage all types of profiles to apply and do not discriminate on the basis of race, national origin, religion, gender, sexual orientation, marital status, disability, social origin, or age.

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 Manager, Software Development Engineering skilled in the DevOps space. You would be reporting to the Director of Software Engineering and your responsibilities will include:

Leading the DevSecOps team, you will oversee operations for multiple development teams, hands-on responsibilities and guiding a team of engineers by distributing tasks, tracking progress, and facilitating their success   Spearheading the development of internal product tools using AI/ML, MLOps and Code LLM functionalities Owning the end-to-end process for Open-Source License Governance and Vulnerability assessment in software applications developed by several other teams, using tools like Blackduck or Snyk integrated in the CI pipelines Managing the Infrastructure: Responsible for administration & maintenance of source control management systems, such as GitLab, GitHub, BitBucket  Nexus, CI/CD systems, Artefact management repositories, test beds etc Integrating SAST, DAST or IaC, tools into the CI / CD pipelines

What We're Looking for (Minimum Qualifications)

Bachelor's Degree in Engineering, CS, MIS, or related field along with 8+ years of hands-on experience in app development, build & release management and setting up CI/CD pipelines 2 years of Team Lead experience managing various tools required in the software lifecycle, Scripting in shell, Python, Groovy or Programming knowledge on Java / C /C++ with Unix / Linux systems expertise  Experience in domains like Application Security, API Security, DevSecOps , Devops and AI/ML is preferred Excellent leadership skills with a track record of managing high-performing teams with strong presentation and communication skills Good understanding of the principles and best practices of Software Configuration Management (SCM) in Agile, scrum, and Waterfall methodologies

What Will Make You Stand Out (Preferred Qualifications)

Experience writing and developing yaml based CI/CD Pipelines using GitLab, GitHub and knowledge of build tools like makefiles/gradle/npm/maven etc Experience with Networking, Load Balancers, Firewalls, Web Security Experience with AI and ML tools in day to day DevSecOps activities

LI-AC10#LI-HybridAt 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:

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

• Location: Fully remote (Preference for Europe or remote ±4 hours CEST)
• Contract Type: Full-time contractor
• Note: Please note we are not hiring from the US, Australia, or New Zealand

About the role

At CoW DAO data plays a central role in how we understand on-chain activity and operate our fair combinatory auction system.

We’re looking for a Data Engineer who’s excited to dive deep into blockchain data (Ethereum and other L1/L2s), enrich it with insights from our off-chain auction system, and build the pipelines and infrastructure to support operations and analytics. This is a hands-on role where you’ll work across teams, design scalable systems, and make high-quality data accessible and actionable across the organization.

If you thrive in a fast-moving environment, love working with complex datasets, and want to shape the data foundation of a leading DeFi protocol, we’d love to hear from you.

What you’ll do

• Collaborate with teams across the company to understand their data needs and provide actionable insights
• Design, build, and maintain robust data pipelines and infrastructure for ingesting and processing on-chain and off-chain data
• Ensure data quality, reliability, and discoverability through testing, monitoring, and documentation
• Create tools and systems that make it easy to access, query, and visualize data (using tools like Redash, Metabase, or Looker)
• Keep an eye on the evolving blockchain data ecosystem—experiment with new tools and techniques to stay ahead
• Own your work end-to-end: from initial idea to deployment and maintenance

Who you are

• Solid experience designing and maintaining scalable data architectures (data lakes, warehouses, pipelines)
• Strong coding skills in Python and SQL
• Comfortable working with blockchain data providers and APIs (e.g. Dune, Etherscan, CoinGecko)
• Familiar with decoding Ethereum transactions and simulation tools (e.g. Tenderly, Phalcon)
• Experience with modern data orchestration frameworks (Dagster, Airflow, or Prefect)
• You write clean, tested, and well-reviewed code and follow best practices for deployment and monitoring
• You’re a self-starter, collaborative, and not afraid to take ownership

Nice to Have

• Familiarity with cloud platforms (AWS, GCP, etc.)
• Previous experience in a startup or high-growth environment
• Experience contributing to or using open-source data/analytics tools in the Web3 space

## What We Can Offer You

• Flexible work environment: Join our hub in Lisbon whenever you want or work remotely
• Token plan: Have a stake in our mission and shape the future of CoW DAO
• Periodic gatherings: Meet your teammates in person during regular team retreats
• Conference allocation: Stay up to date with the latest in Web3 using our conference budget
• Learning budget: Support for personal and professional development
• Hardware budget: Set yourself up with the tools you need
• Flat hierarchies: Have more ownership and less red tape
• Flexible time off: Balance your personal and work life
• Make an impact: Your contributions directly influence the direction and success of the protocol
• Growth: Take initiative, own projects, and accelerate your learning and growth

Referral Program

Earn 4,000 USDC/USD through our 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.

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.

Join the Future of Crypto Investing!

Are you passionate about blockchain, cryptocurrencies, and building revolutionary platforms? CRYLO® is a cutting-edge FinTech startup revolutionizing DeFi with Artificial Intelligence (AI) and Machine Learning (ML) algorithms. We are building a platform that simplifies crypto investing for the masses, from market analysis, to personalized crypto portfolio creation, and fully automated trading.

Join this ambitious team as our Lead Blockchain Developer to shape the future of decentralized finance!You’ll work closely with the CTO, Quant and fontend developers to create an intuitive experience for investors entering the DeFi space.

This is your chance to be part of a startup that’s transforming decentralized finance (DeFi) while working closely with an inspiring team. Join us and help develop the backend of our MVP for the world’s first AI-driven wealth management platform.

Tasks

• Collaborate with the CTO and the development team to design, build, and maintain CRYLO®.
• Integrate multiple APIs, import large data, and build interfaces on the backend.
• Develop, deploy, optimize and manage proxy-server systems, blockchain-based solutions (trading, lending, staking, a.o.), including smart contracts writing, AI and ML algorithms integrations for our backend and use CICD.
• Write clean, efficient, and maintainable code (mainly Phyton), following best practice in blockchain and cloud computing.
• Deliver solutions for the orchestration tasks.
• Create and maintain scalable, secure, high-performing, and high-frequency cloud-based infrastructure.
• Troubleshoot and resolve issues in a fast-paced startup environment.
• Actively contribute to product/tokenization discussions and bring innovative ideas to the table.

Requirements

• A Bachelor’s, Master’s or PHD degree, in computer science from a top university.
• Minimum of 5 years proven expertise as a full-stack blockchain developer.
• Proven experience in blockchain technology and smart contract development in ERC20 standard.
• Experience in API development and large data imports.
• Expertise in Python (3.12) programming.
• Proven experience in docker containerization.
• Experience in SHELL programming.
• Hands-on experience with cloud computing platforms (AWS, Azure, Tencent, a.o.).
• Familiarity with decentralized finance (DeFi), cryptocurrencies, and Web3 ecosystems.
• Strong understanding of database systems (SQL and NoSQL).
• Experience with TypScript, Javascript and front-end frameworks (React).
• Experience with Git, CI/CD pipelines, and agile development methodologies.
• Ability to work in a remote, self-motivated environment and meet tight deadlines.
• Excellent communication skills in English and the ability to collaborate effectively with cross-functional teams.
• Previous experience in startups or entrepreneurial projects.
• Past contributions to DeFi projects, connected in the developer community.
• Experience in the creation and development of algorithms and bots.
• Knowledge of AI/ML algorithms and their application in financial services.
• Applied mathematics and theoretical mathematics.
• ICM/ICPC knowledge.

Benefits

• This is a unique opportunity to be part of a visionary and serious FinTech startup.
• The chance to work closely with industry experts from the very beginning, including the CEO, CPO and CTO, in a collaborative and friendly environment.
• An investment into your future: 1. Repayment for all work completed once we secure funding. 2. Thereafter, a full-time job contract with a competitive salary upon successful MVP delivery and funding. 3. Participation in our incentive program (phantom shares/ tokens) to grow together as the company scales.

If you’re ready to take your blockchain and backend development skills to the next level and be part of a groundbreaking project, we’d love to hear from you!

Please note that we only accept applications directly from individuals and not through staffing firms, and a complete application must include a resume and a list of links to your recent project references.

Apply Now:

Apply Now:

BitGo is the leading infrastructure provider of digital asset solutions, delivering custody, wallets, staking, trading, financing, and settlement services from regulated cold storage. Since our founding in 2013, we have focused on enabling our clients to securely navigate the digital asset space. With a global presence and multiple Trust companies, BitGo serves thousands of institutions, including many of the industry's top brands, exchanges, and platforms, and millions of retail investors worldwide. As the operational backbone of the digital economy, BitGo handles a significant portion of Bitcoin network transactions and is the largest independent digital asset custodian, and staking provider, in the world. For more information, visit www.bitgo.com.This role will require being full-time onsite at our Toronto office to support collaborative team dynamics and innovative problem-solving. BitGo is looking for a Senior Software Engineer (Full-Stack) who will join our Bitcoin Team. BitGo processes a significant amount of cryptocurrency transactions so our applications need to be fast, accurate, scalable and secure. Our integrated platforms interact with a number of exchanges, agencies, and governments around the world, and we use the best technology the industry offers to build them. Responsibilities

Enhance our multi-signature Bitcoin wallets with the latest Bitcoin features, at the scale of billions of dollars per month Own the functionality, scalability and performance of the systems which support our Bitcoin products Improve, extend and maintain existing backend software which integrates with the Bitcoin blockchain Contribute Bitcoin knowledge and expertise throughout the engineering team Expose and document functionality to the UI, third-party developers, and our internal and external tooling

Skills & Experience We are looking for teammates who share and practice our values of open communication, collaboration, accountability, and craftsmanship, and who feel passionate about  our mission to deliver trust in digital assets.  Required

5+ years of Full-Stack software development experience Thoughtful, minimalistic and sound API design philosophy Comfortable with git and Github-based code review Passion for enabling cutting-edge Bitcoin features at scale Believes in testing twice (or more), and shipping once Ability to work independently in a fast-paced environment

Preferred

Strong understanding of fundamental Bitcoin blockchain mechanics Programming and debugging skills using Node.JS, JavaScript, and Typescript Familiarity with emerging Bitcoin features, such as Taproot, Descriptors, Lightning Non-trivial contributions to Bitcoin-related open source software Experience with developing containerized applications running in Kubernetes

Why Join BitGo? Disrupting an industry takes vision, innovation, passion, technical chops, drive to deliver, collaboration, and execution. Join a team of great people who strive for excellence and personify our corporate values of ownership, craftsmanship, and open communication. We are looking for new colleagues who bring innovative ways of thinking and problem solving, and who want risks to be part of the team that changes the world’s financial markets. Pay Transparency Notice: Depending upon your leveling and location, the compensation for this role averages between $180,000 - $240,000 CAD base salary. Equity and an annual performance bonus are also a part of this role's package. Cryptocurrencies are the most disruptive change the financial services industry has seen in years. Join us and you’ll be able to look back and say you were part of the team that transformed investing.

Apply Now:

BitGo is the leading infrastructure provider of digital asset solutions, delivering custody, wallets, staking, trading, financing, and settlement services from regulated cold storage. Since our founding in 2013, we have focused on enabling our clients to securely navigate the digital asset space. With a global presence and multiple Trust companies, BitGo serves thousands of institutions, including many of the industry's top brands, exchanges, and platforms, and millions of retail investors worldwide. As the operational backbone of the digital economy, BitGo handles a significant portion of Bitcoin network transactions and is the largest independent digital asset custodian, and staking provider, in the world. For more information, visit www.bitgo.com.This role will require being full-time onsite at our San Francisco office to support collaborative team dynamics and innovative problem-solving. BitGo is looking for a Senior Software Engineer who will join our Bitcoin Team. BitGo processes a significant amount of cryptocurrency transactions so our applications need to be fast, accurate, scalable and secure. Our integrated platforms interact with a number of exchanges, agencies, and governments around the world, and we use the best technology the industry offers to build them. Responsibilities

Enhance our multi-signature Bitcoin wallets with the latest Bitcoin features, at the scale of billions of dollars per month Own the functionality, scalability and performance of the systems which support our Bitcoin products Improve, extend and maintain existing backend software which integrates with the Bitcoin blockchain Contribute Bitcoin knowledge and expertise throughout the engineering team Expose and document functionality to the UI, third-party developers, and our internal and external tooling

Skills & Experience We are looking for teammates who share and practice our values of open communication, collaboration, accountability, and craftsmanship, and who feel passionate about  our mission to deliver trust in digital assets.  Required

5+ years of Full-Stack software development experience Thoughtful, minimalistic and sound API design philosophy Comfortable with git and Github-based code review Passion for enabling cutting-edge Bitcoin features at scale Believes in testing twice (or more), and shipping once Ability to work independently in a fast-paced environment

Preferred

Strong understanding of fundamental Bitcoin blockchain mechanics Programming and debugging skills using Node.JS, JavaScript, and Typescript Familiarity with emerging Bitcoin features, such as Taproot, Descriptors, Lightning Non-trivial contributions to Bitcoin-related open source software Experience with developing containerized applications running in Kubernetes

Why Join BitGo? Disrupting an industry takes vision, innovation, passion, technical chops, drive to deliver, collaboration, and execution. Join a team of great people who strive for excellence and personify our corporate values of ownership, craftsmanship, and open communication. We are looking for new colleagues who bring innovative ways of thinking and problem solving, and who want risks to be part of the team that changes the world’s financial markets. Here are some of the benefits* of working at BitGo:

Competitive base salary, bonus and stock options 100% company paid health insurance for employee, partner and dependents Up to 4% 401k company match Paid parental leave, Paid vacation Free commuter/parking pass Free custom lunches, dinners and snacks  Computer equipment and workplace furniture to suit your needs Great colleagues and inspiring startup environment

*Benefits may vary based on location.  Pay Transparency Notice: Depending upon your leveling and location, the compensation for this role averages between $165,000 - $210,000 USD base salary. Equity, an annual performance bonus and the benefits outlined above are also a part of this role's package. Cryptocurrencies are the most disruptive change the financial services industry has seen in years. Join us and you’ll be able to look back and say you were part of the team that transformed investing.

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:

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.Responsibilities

Be part of a trading systems engineering team, dedicated to building out the core trading platforms. Work closely with cross functional teams to improve the system reliability, scalability and security. Engage in and improve the infrastructure quality supporting the platform. Build and manage systems, infrastructure and applications through automation. Provide operational support to internal teams working on the platform. Work on improvements to bring in high efficiency, reduce latency, deploy systems faster. Practice sustainable incident response and blameless postmortems. Together with your engineering team, you will share an on-call rotation and be an escalation contact for service incidents. Implement and maintain rigorous security best practices across all infrastructure, with a focus on minimizing attack surface and ensuring data integrity. Monitor system health and performance with a keen eye for identifying and resolving issues before they affect trading activity.

 Minimum Qualification

Bachelors with 5+ years of working experience as Site Reliability Engineering (SRE) / Devops Engineer Strong knowledge of Linux system internals (kernels, memory management, file systems & network I/O optimization) as well as bash scripting. Proven expertise optimizing systems for lowest latency performance and productionizing trading systems, from initial concept to full deployment, including on-prem and colocation. Strong working knowledge of network communications fundamentals TCP/IP and UDP Knowledge of FIX protocol, as well as familiarity with low latency multicast with Aeron. Strong skills around observability, debugging and performance tuning, with a willingness to dive-deep to determine the root cause,  Effective communicator, with the ability to explain root causes in plain language, then outline plans and recommendations to remediate and ultimately to execute plans that systematically resolve issues. Demonstrated ability to build tools that enable rapid operational triage; leveraging logs, performance telemetry metrics and traces to make Grafana dashboards (or similar)  Strong experience deploying and managing Cloud infrastructure with providers like AWS, Azure and/or GCP (accounts, profiles, IAM roles, Policies, service classes, instance types, etc.) Strong experience adapting workloads to use Cloud Native technologies, like kubernetes and docker etc. (Dockerfile, docker-compose, helm charts, deploy manifest, ingress wiring, service mesh, etc.) Expertise using devops deployment tooling, like Github Actions, Jenkins, ArgoCD and Ansible. Hands-on experience developing in one or more programming languages: C, C++, Java, Python, or Go. Proficient in utilizing C++ build systems such as CMake and building CI/CD pipelines for trading systems. Working knowledge of key backing services like mysql, PostgresDB, Redis, MongoDB, DynamoDB, Kafka, RabbitMQ, etc.

Preferred Qualification

Extensive experience with DevOps for Deployment automation and App level support, as well as SRE and/or Linux systems Administrator for systems and infrastructure level support. Extensive experience in a Low Latency Electronic trading environment, where high performance is critical at all stages of the infrastructure, network and application design and implementation. Expertise in developing advanced observability capabilities (USE-RED signals, Tracing, front end observability etc) 

Bonus Points:

Experience with hardware acceleration technologies (FPGAs, GPUs, LPU, TPU). Experience with financial data security regulations (PCI DSS, SOC 2). Familiarity with algorithmic trading strategies and quantitative analysis concepts. 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:

About Cryptio

Cryptio is building the data infrastructure for the crypto economy. Our enterprise-grade back-office platform helps businesses and institutions automate financial reporting and compliance for digital assets—so they can navigate the crypto space with confidence. Backed by top investors like Point Nine, 1kx, and BlueYard, we’ve raised $26M and work with industry leaders like Circle, Uniswap, and even the Government of El Salvador. Currently, we are a team of 80 amazing people. Crypto needs better infrastructure to go mainstream—and we’re here to build it!

Location

At Cryptio, we’re a remote-first team, with most working 100% remotely, while others enjoy a mix of office time in our hubs in London or Paris. This role requires candidates to be based in the UK, and we support the setup that works best for your life>

The Team

We’re looking for a Junior Fullstack Engineer to join one of our fast-moving product squads. You’ll work closely with both our frontend and backend leads to improve connectivity across our stack, contribute to new features, and help strengthen our internal libraries and tooling. This is a great opportunity to grow your technical skills in a high-performing, supportive environment—while making a real impact on our product and customers.

Team Stack

• Languages & Frameworks: TypeScript, JavaScript, HTML, CSS

• Frontend: React, TailwindCSS, Emotion, React Query, Playwright, Jest

• Backend: NestJS, REST APIs

• Tooling: GitLab, Git

• Architecture: Microservices with strong code sharing across teams

What’s special about this role?

This is a fantastic opportunity for an early-career engineer to grow in a fast-paced, collaborative environment. You’ll work on both the frontend and backend of our core product, contributing to meaningful features and helping improve our development workflows. You'll be learning from experienced engineers, contributing to production code from day one, and playing a key role in shaping the future of crypto financial tooling.

What you'll be doing

• Write clean, production-grade TypeScript code (both frontend and backend)

• Maintain and improve our backend APIs and shared libraries

• Contribute to our testing framework and write robust E2E and unit tests

• Help reduce technical debt and improve developer experience

• Work on new features end-to-end with product and engineering teams

We’re looking for someone who has

• 3+ years of full stack development experience

• Strong HTML, CSS, and JavaScript fundamentals

• Hands-on experience with React, TypeScript, and NestJS

• Familiarity with styling tools like TailwindCSS or Emotion

• Experience with frontend testing frameworks like Jest or Playwright

• Comfort working with REST APIs and managing state using tools like React Query

• Strong communication skills in written and spoken English

• Familiarity with modern development workflows (Git, GitLab)

• A collaborative, team-first mindset

Nice to have

• Interest in or knowledge of the crypto ecosystem

• Previous experience with data-heavy products

• Experience working in a startup or fast-paced environment

Interview Process

1. Talent Screen - 45 min

2. Technical Interview - 60 min

3. Team Interview - 45 min

4. Leadership Interview - 45 min

Benefits

✨ Fully-Remote / Hybrid – The choice is yours! 🌍🏡

🎉 25 Days Paid Holiday + Bank Holidays

🎂 Your Birthday Off

🧠 Access to Mental Health, Wellbeing, and Coaching 🌿🎯

👶 Attractive Maternity and Paternity Policies for your growing family 👨‍👩‍👧‍👦

💪 Gym Classes or Spa Treatments with ClassPass (or gym reimbursements)! 🧘‍♂️🧖‍♀️

💻 Apple MacBook Pro – The best tech at your fingertips! 💻✨

💵 $200 Workplace Budget to create your perfect home office! 🏠💼

📚 Training and Development Budget – Invest in yourself and grow! 🚀

UK have these additional benefits: 4% Pension Contributions towards your future + Private Medical & Dental Insurance with Allianz.

France have these additional benefits: English language course options.

Apply Now:

About Cryptio

Cryptio is building the data infrastructure for the crypto economy. Our enterprise-grade back-office platform helps businesses and institutions automate financial reporting and compliance for digital assets—so they can navigate the crypto space with confidence. Backed by top investors like Point Nine, 1kx, and BlueYard, we’ve raised $26M and work with industry leaders like Circle, Uniswap, and even the Government of El Salvador. Currently, we are a team of 80 amazing people. Crypto needs better infrastructure to go mainstream—and we’re here to build it!

Location

At Cryptio, we’re a remote-first team, with most working 100% remotely, while others enjoy a mix of office time in our hubs in London or Paris. This role requires candidates to be based in the France, and we support the setup that works best for your life>

The Team

We're looking for a mid-level Frontend Software Engineer to join our remote-first team at Cryptio. In this role, you'll write production-grade TypeScript code and contribute to the development and maintenance of our front-end frameworks, design systems, and components. You’ll also play a key role in improving our testing setup.

You’ll work closely with our Frontend Lead on defining the roadmap, setting priorities, and conducting technical research. You'll also help shape and build new product features that bring real value to our users.

What you'll be doing

• Write production-grade TypeScript code

• Make front-end technical decisions when the lead is unavailable

• Improve and maintain our internal front end frameworks

• Improve and maintain our design system and our components

• Improve our testing framework and write tests

• Help manage technical debt: collaborate with our front end lead on the roadmap definition, prioritisation, and research

• Contribute to new features development

We're looking for someone who has

• 3+ years of experience as a Frontend Software Engineer

• Fluency in HTML, CSS, and JavaScript

• Proficiency in React and TypeScript

• Some experience with CSS frameworks (we use Tailwind and Emotion)

• Some experience with frontend end-to-end testing frameworks (we use Jest and Playwright)

• Familiarity with data fetching (we use React Query to consume a REST API) and state management

• Familiarity with modern development practices (e.g., Git, GitLab)

• A collaborative mindset — you thrive when working with others

Nice to have

• General knowledge of the crypto ecosystem

• Prior experience working on data-heavy products

• Prior experience working in a start-up / fast-paced environment

Interview Process

1. Talent Screen - 45 min

2. Technical Interview - 60 min

3. Team Interview - 45 min

4. Leadership Interview - 45 min

Benefits

✨ Fully-Remote / Hybrid – The choice is yours! 🌍🏡

🎉 25 Days Paid Holiday + Bank Holidays

🎂 Your Birthday Off

🧠 Access to Mental Health, Wellbeing, and Coaching 🌿🎯

👶 Attractive Maternity and Paternity Policies for your growing family 👨‍👩‍👧‍👦

💪 Gym Classes or Spa Treatments with ClassPass (or gym reimbursements)! 🧘‍♂️🧖‍♀️

💻 Apple MacBook Pro – The best tech at your fingertips! 💻✨

💵 $200 Workplace Budget to create your perfect home office! 🏠💼

📚 Training and Development Budget – Invest in yourself and grow! 🚀

UK have these additional benefits: 4% Pension Contributions towards your future + Private Medical & Dental Insurance with Allianz.

France have these additional benefits: English language course options.

Apply Now:

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.

We’re looking for an FPGA Code Engineering Support specialist to help design, implement, and optimize low-level logic on FPGAs used in our high-performance networking systems. You’ll work alongside protocol engineers, network architects, and hardware partners to build and support custom compute and switching infrastructure that powers the DoubleZero network.

Key Responsibilities

• Develop, simulate, and debug FPGA code (VHDL/Verilog/SystemVerilog) for custom hardware

• Assist with the integration of FPGA logic into broader hardware and networking systems

• Support synthesis, place-and-route, and timing analysis workflows

• Maintain and refactor existing FPGA codebases to improve performance or adapt to new requirements

• Work with hardware and DevOps teams to deploy and monitor FPGA systems in production environments

• Contribute to hardware validation and bring-up of new boards or modules

• Document technical specifications, design notes, and test procedures

You Should Have

• Proficiency in VHDL or Verilog and experience with simulation/debugging tools (e.g., ModelSim, Vivado)

• Solid understanding of digital design concepts: state machines, pipelining, timing closure, etc.

• Familiarity with FPGA toolchains from Xilinx

• Hands-on experience working with real-time or latency-sensitive systems

• Comfortable working in a Linux-based development environment and using Git

• Strong communication and collaboration skills, especially across hardware/software interfaces

• Experience implementing mathematical functions and encryption/decryption algorithms in hardware

• Maintain and refactor existing FPGA codebases to improve performance or adapt to new requirements, including experience designing ABIs and command & control interfaces for integration with broader system components

• Exposure to high-speed I/O and interconnect protocols (e.g., PCIe, AXI, 100G/400G Ethernet)

Nice to Have

• Familiarity with network protocol acceleration or custom switch fabric design

• Background in low-latency systems used in finance, AI, or blockchain

• Ability to write scripts or tools in Python, Bash, or Go to support FPGA workflows

Why Work With Us?

• Help design the physical layer powering a decentralized, high-performance internet

• Collaborate with a world-class team building novel infrastructure for web3 and beyond

• Competitive compensation + significant token upside

• Flexible remote work with optional off-sites and team retreats

ABOUT DOUBLEZERO

DoubleZero is a decentralized, permissionless protocol that revolutionizes network performance for distributed systems like blockchain. The mission is simple: increase bandwidth and reduce latency.

DoubleZero increases bandwidth by filtering junk data that currently plagues validators and other network operators. DoubleZero reduces latency by connecting these filters with underutilized private fiber links in the form of a mesh network. By combining these improvements and routing the right data through optimized, low-latency paths, the DoubleZero protocol empowers blockchains and other systems to reach performance levels that are currently impossible.

In short, DoubleZero is a new Internet for distributed systems. It is supported by two organizations: DoubleZero Foundation, which drives the adoption, decentralization, security, and advancement of the protocol; and Malbec Labs, which develops the technical components of the protocol itself. We look forward to hearing from you.

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.