Serokell is a fast-growing, fully remote software development company that works on innovative solutions for complex problems. We’re packed full of adventurous, curious, and inclusive folks who want to build cutting-edge software with modern technologies like functional programming.

This position is open now with a July start. This is a project-based hire with the option to extend if it is a good match. Submit your CV and we’ll reach out promptly.

We’re seeking a middle to senior level Solidity Developer to join a team of fierce and fun Serokellers.

Hiring Process Overview: We invite candidates to the HR screening as the first step. Next, we conduct a technical interview with those whose profiles align with our requirements. Successful candidates will receive an offer.

Requirements:

• Fluency with Ethereum or another EVM-based blockchain ecosystem
• 2+ years in software development
• 1+ years experience writing, testing, and deploying Solidity contracts
• Hands-on experience with Hardhat, Foundry, Truffle, or Remix for development, testing, and debugging, including transaction submission, data retrieval, and key management
• Understanding of security issues and best practices for Ethereum and De-Fi applications
• Knowledge of popular token standards such as ERC-20, ERC-721, and ERC-1155
• Experience developing and integrating decentralized applications, both backend and frontend
• Basic understanding of cryptography primitives: public/private keys, signing, encryption, hashing
• Knowledge of fundamental algorithms and data structures like hash tables, binary search trees, DFS, quicksort
• Strong coding practices, including clean code structure, use of git, pull requests, and code review
• Fluent English, strong communication and collaboration skills
• Comfortable with daily stand-ups and asynchronous updates
• Self-driven, proactive, teamwork-oriented, curious and inclusive mindset
• Full-time commitment, around 140–160 hours per month
• Comfortable overlapping with team time zones from UTC 0 to UTC -8

It will be a significant plus if you have:

• Knowledge of TypeScript, Haskell, Rust, or OCaml
• Experience conducting security audits and identifying vulnerabilities
• Understanding of computer networks, HTTP, TCP/IP stack, and data synchronization models used in modern service APIs
• Familiarity with build/deploy automation tools and CI/CD systems such as Docker, Nix, Kubernetes

Responsibilities:

• Create and implement secure and efficient Solidity contracts, ensuring scalability, reliability, and maintainability
• Integrate contracts with EVM blockchain networks, often involving backend or frontend work
• Review and audit code
• Develop and execute unit tests, integration tests, and end-to-end tests
• Write detailed documentation for code, including design specs, user guides, and API documentation
• Stay updated on the latest developments in Solidity, Ethereum, and EVM-related technologies, cryptographic methods, and relevant programming languages
• Optimize code performance and gas efficiency
• Implement and enforce security best practices to protect contracts from common vulnerabilities
• Provide ongoing support and maintenance for deployed applications, addressing user-reported issues and bugs

We offer:

• Competitive salary.
• Engaging international projects.
• Participation in leading global conferences.
• International and multicultural teams.
• Fully remote work with flexible hours.
• Ability to take time off as needed.
• Investment in career and professional growth, with potential for wage increases.
• Mentoring and training programs.
• Opportunity to contribute to a leading functional programming blog.
• Therapy sessions for well-being support.

By joining Serokell, you’ll become part of a warm community of ingenious engineers, computer scientists, designers, marketing experts, and other inventive minds. You’ll work on ambitious projects building the next generation of computer software, explore creative initiatives unhindered by bureaucracy, and enjoy our vibrant Slack channels—ranging from #music to #philosophyandtears (did we mention the massive custom emoji set?).

• Build cutting-edge infrastructure and tools that empower AI-driven developer workflows.
• Create and deploy autonomous AI agents that integrate effortlessly with essential dev tools like GitHub, Slack, Linear, and Figma.
• Collaborate across engineering, product, and design to ship AI products that 10x productivity and redefine developer experiences.
• Prototype swiftly, iterate rapidly, and optimize for real-world performance, scalability, and user delight.
• Package and deliver robust AI solutions through user-friendly SDKs, APIs, and intuitive interfaces.

• Proficiency in Python, Go, or TypeScript/Node.
• Experience orchestrating AI agents and automating workflows.
• Familiarity with observability tools for AI/ML systems.
• Practical experience with Terraform, Kubernetes, and CI/CD processes.
• A knack for rapid prototyping and shipping robust, production-ready code.

• Shipped agentic workflows or built LLM-powered systems (Claude Code, LangChain, etc.)
• Contributed to open-source AI or agent frameworks.
• Integrated AI technologies into popular dev and collaboration tools.
• Startup or zero-to-one product experience.
• Deep understanding of reasoning, planning, and memory architectures in autonomous agents.

Job #: GPBE05US

*Answers to crypto-related questions may be used to evaluate your onchain experience

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Exodus has several exciting engineering projects and we need Senior Software Engineers to drive them forward. New company priorities have been established to push our wallet SDK into mass adoption. Our Exchange, the primary revenue-generating product, needs a front-end wizard. Our React Native mobile app performance needs to level up and we need to set up continuous performance regression monitoring. Developer experience needs TLC and then more TLC. Expect to work on these with incredibly talented engineers. We aim for our engineering team to inspire new hires and vice versa. What You Will Do

Develop and ship features from the engineer and product roadmaps. Code reviews. Work with engineering and product managers to estimate and evaluate technical projects. Iterate on codebase architecture. Respond to incidents.

Who You Are

A senior engineer with the ambition to become a technical leader within your first year. An expert in JavaScript / Node.js. Significant experience in front-end (we use React / React Native / Redux) and/or back-end (we use Postgres, DocumentDB, lots of AWS services, and deploy to Lambda/Kubernetes). Comfortable with Build tooling: Babel / Webpack / NPM / Lerna. An excellent communicator.

A Plus

Experience with performance profiling in different JS environments. Experience with mobile and web app security. Experience with browser extension development. Experience building developer tooling. Experience building smart contracts/wallets/dApps/cryptographic protocols. Electron apps development experience.

About Exodus Exodus is a multi-asset cryptocurrency wallet with a built-in exchange feature. We started our movement in 2015 and have been a distributed team since then. Our mission is to help half of the world exit the traditional financial system and move into the crypto financial system by the year 2030.  What We Offer

Freedom to work wherever you want, whenever you want. Building the future. Cryptocurrencies lay the foundation to the internet of value, the next major wave in application technology and personal finance. Collaborative and feedback-driven culture. Opportunity to grow.  Fair pay, no matter where you live along with a competitive benefits package. 100% pay in Bitcoin with a buffer to account for price changes and exchange fees.  All the tools you need to do the job.

Benefits Health: Most of our health insurance plans are covered 100% for you and covered 50% for your dependents. We’ll also cover dental insurance. If you are outside of the United States, we will reimburse you up to $500 per month for any medical and dental insurance for you and your dependents. PTO: 30 days of paid time off per year on top of a flexible schedule where you can work wherever and whenever. If you’re part-time with us, you’ll still receive 15 days of paid time off. Unlimited Bereavement: We will pay you your full salary for the first two weeks for the loss of any immediate family members but we allow you to take all the time you need to grieve outside of that. Parental Leave: 13 weeks of fully paid leave with and a month of flexible work for the primary caregiver. 4 weeks of paid leave if you are the child's secondary caregiver. Tax Help: Getting paid in Bitcoin new to you? Don’t worry! We will reimburse you for speaking with a professional tax specialist in your state/country to make sure everything is taken care of. Perks: Exodus offers a variety of seasonal perks such as coverage for gym memberships and therapy. We also offer quarterly Wellness Days! We want to make sure all of our employees know they are our priority and give back for your hard work often. Our Hiring Process To apply, we'd love to learn more about you. Please answer our application questions! Submitting a resume is optional. Our hiring process consists of several different stages.  Recruiter Interview: If we like your initial application, expect to schedule an interview with a member of our recruitment team. This interview will focus on getting to know you a bit more and will focus on explaining the culture of the company. We want to know more about why you want to join our team, how you feel about our mission and cryptocurrency now and how it fits into your overall career plan to make sure this is the right place for you. Assessments: Not every role consists of an assessment but if yours does it will be directly related to the job you apply for. Interview with your future manager: This is to make sure that you are a fit for the role you are applying to and to explore your career history. In this interview, we’ll learn more about the hard and soft skills you possess to help determine if you’d be a good fit for us. Interview(s) with your future colleagues: We call these focus interviews and they are a time for you to learn more about your role from someone you will closely collaborate with. It’s also a time for us to see how we align in terms of competencies and expected outcomes of the role.Pay Transparency Notice: Salary and all other total compensation information (commission and benefits) will be discussed in detail during the hiring process.Salary Range$150,000 - $9,999,999,999,999.99 USD

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WHO WE ARE: Zinnia is the leading technology platform for accelerating life and annuities growth. With innovative enterprise solutions and data insights, Zinnia simplifies the experience of buying, selling, and administering insurance products. All of which enables more people to protect their financial futures. Our success is driven by a commitment to three core values: be bold, team up, deliver value – and that we do. Zinnia has over $180 billion in assets under administration, serves 100+ carrier clients, 2500 distributors and partners, and over 2 million policyholders. WHO YOU ARE: We are looking for a passionate and skilled Python, AI/ML Engineer with 5-7 years of experience to join our team. You will work on cutting-edge projects involving Generative AI, machine learning, and scalable systems, helping to build intelligent solutions that deliver real business value. If you thrive in a fast-paced environment and love solving complex problems using data and intelligent algorithms, we’d love to hear from you.   WHAT YOU’LL DO: • Design, develop, and deploy machine learning models and Generative AI solutions.• Work on end-to-end ML pipelines, from data ingestion and preprocessing to model deployment and monitoring.• Collaborate with cross-functional teams to understand requirements and deliver AI-driven features.• Build robust, scalable, and well-documented Python-based APIs for ML services.• Optimize database interactions and ensure efficient data storage and retrieval for AI applications.• Stay updated with latest trends in AI/ML and integrate innovative approaches into projects. WHAT YOU’LL NEED: • Python – Strong hands-on experience.• Machine Learning – Practical knowledge of supervised, unsupervised, and deep learning techniques.• Generative AI – Experience working with LLMs or similar GenAI technologies.• API Development – RESTful APIs and integration of ML models into production services.• Databases – Experience with SQL and NoSQL databases (e.g., PostgreSQL, MongoDB, etc.).Good to Have Skills:• Cloud Platforms – Familiarity with AWS, Azure, or Google Cloud Platform (GCP).• TypeScript/JavaScript – Frontend or full-stack exposure for ML product interfaces.• Experience with MLOps tools and practices (e.g., MLflow, Kubeflow, etc.)• Exposure to containerization (Docker) and orchestration (Kubernetes).   WHAT’S IN IT FOR YOU? At Zinnia, you collaborate with smart, creative professionals who are dedicated to delivering cutting-edge technologies, deeper data insights, and enhanced services to transform how insurance is done. Visit our website at www.zinnia.com for more information. Apply by completing the online application on the careers section of our website. We are an Equal Opportunity employer committed to a diverse workforce. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability

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Team

As part of the International Payments team at Coinbase, you will help shape the future of payment integrations in countries around the world.

As a software engineer, you will partner with internal teams and external partners to expand Coinbase's portfolio of fiat onramps and offramps in strategic markets globally. This is an exciting and unique opportunity to be at the foundation of Coinbase's intensified focus on international growth. You will have a direct impact on making Coinbase the best cryptocurrency platform. In this role, you will help create the industry-leading standard for reliable and fast payments in the crypto space.

The International team prides itself on being innovative and customer-centric. It is a high-performing team where you can fuel your passion for building world-class products that ignite cryptocurrency adoption worldwide.

What you’ll be doing (ie. job duties):

• Build high-performance services using Golang and gRPC, creating seamless integrations that elevate Coinbase's customer experience.
• Champion best practices in design techniques, coding, testing, documentation, monitoring, and alerting.
• Demonstrate a keen awareness of Coinbase’s platform, development practices, and various technical domains and build upon them to efficiently deliver improvements across multiple teams.
• Add positive energy in every meeting, and make your coworkers feel included in every interaction.
• Communicate across the company to technical and non-technical leaders with ease.
• Deliver high-quality services efficiently within tight timeframes, navigating uncertainties with agility.
• Work with teams and teammates across multiple time zones.

What we look for in you (ie. job requirements):

• 3+ years of experience as a software engineer and 1+ years building backend services using Golang and gRPC.
• Be a self-starter, executing complex solutions with minimal guidance while ensuring efficiency and scalability.
• Proven experience integrating with third-party applications or APIs using Golang.
• Hands-on experience with AWS, Kubernetes, Terraform, Datadog, or similar cloud infrastructure tools.
• Working knowledge with event-driven architectures (Kafka, MQ, etc.) and Hands-on experience in SQL or NoSQL databases.
• Good Understanding of gRPC, GraphQL, ETL pipelines, and modern development practices.

Nice to haves:

• Working experience in software development with a focus on payment integration.
• Experience with payment gateway APIs and third-party payment services.
• Experience in AWS, Kubernetes, Terraform, GitHub Actions or similar.
• Experience with rate limiters, caching, metrics, logging, debugging.

Req ID - GCBE04SG

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​​Developer Experience (DevX) is responsible for making sure all engineers at Coinbase build high-quality products while being productive and engaged. We do this by providing infrastructure, libraries, frameworks, and tooling to make it easier and faster to build high quality applications. Within DevX, our Onchain Pod is focused on defining the future of developer experience for onchain developers, both within Coinbase and in the broader crypto ecosystem. We believe that the onchain platform is the most important builder platform since the internet (“online”). As a Staff Software Engineer on this team, you’ll be instrumental in designing, building, and executing core solutions that drive our systems.

What you’ll be doing (ie. job duties):

• Lead the new Onchain Pod and help define its charter, vision, mission, and roadmap.
• Work with stakeholders in Engineering and Security to identify pain points and insecure processes in the onchain development lifecycle.
• Architect and build new tooling to improve onchain development for Coinbase and the broader ecosystem. Augment and maintain existing tooling.
• Drive the evolution of Web3 development toward Web2-level tooling, reliability, and ergonomics - reducing friction and making onchain development more accessible.
• Take ownership of the team's processes and services, ensuring SLA adherence.
• Be a thoughtful technical voice within the team, aiding in diligent architectural decisions and fostering a culture of high-quality code and engineering processes.
• Mentor and collaborate with other members of the team to deliver high quality solutions.
• Champion a “don’t DIY unless necessary” philosophy by leveraging proven industry standards and modern frameworks wherever possible.
• Stay current with emerging trends in the Web3 tooling ecosystem, and integrate best-in-class solutions to accelerate internal development without reinventing the wheel.

What we look for in you (ie. job requirements):

• You have 8+ years of software engineering experience.
• You are passionate about enabling onchain development.
• You have extensive experience with smart contract deployments, execution, and management (EVM in particular).
• You have a deep understanding of how popular L1s and L2s work.
• You have an energy and self-drive for continuous learning as crypto is a constantly and rapidly changing space.
• You excel in clear, direct, and kind communication with technical and non-technical stakeholders.
• You have experience building relationships with security, product, and engineering teams.
• You balance long term strategic thinking with short term tactical planning.
• You are familiar with cloud infrastructure (e.g., AWS), containerization (e.g., Kubernetes), and Infrastructure as Code tools like Terraform.
• You have a Bachelor’s or Master’s degree in Computer Science, Software Engineering, or equivalent experience.

Nice to haves:

• Prior experience working in a Developer Experience/Productivity, Platform, or similar domain team.
• Have previous experience at a fast paced, high growth stage internet/software company.
• Contributions to open-source crypto projects, such as OP Stack.
• Experience with Golang, Geth, Rust, Reth, Foundry, Solidity, or other crypto tools.
• An interest in blockchain security, red-teaming, and exploit prevention.

Job #: GPBE06US

*Answers to crypto-related questions may be used to evaluate your onchain experience.

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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 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.

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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.

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🚀 Join the Future of Commerce with Whatnot!  Whatnot is the largest livestream shopping platform in North America and Europe to buy, sell, and discover the things you love. We’re re-defining e-commerce by blending community, shopping, and entertainment into a community just for you. As a remote co-located team, we’re inspired by innovation and anchored in our values. With hubs in the US, UK, Ireland, Poland, and Germany, we’re building the future of online marketplaces—together. From fashion, beauty, and electronics to rare collectibles like trading cards, comic books, and even live plants, our live auctions have something for everyone. And we’re just getting started! As one of the fastest growing marketplaces, we’re looking for bold, forward-thinking problem solvers across all functional areas. Check out the latest Whatnot updates on our news and engineering blogs and join us as we enable anyone to turn their passion into a business, and bring people together through commerce. 💻 Role You will work in cross-functional, multidisciplinary teams, allowing you to directly shape the security and integrity of our user account systems. Your goal will be to minimize risk and potential abuse by ensuring robust authentication, authorization, and access controls across our environment. You will empower other teams to move fast without compromising user trust by delivering secure-by-default infrastructure, scalable permissioning systems, and reliable storage for sensitive user data. Your designs, code, and ideas will contribute to solving some of the most complex technical challenges we face today and help define future engineering initiatives. Some sample projects you might work on are: 

Authentication Authorization Permissions Access control systems across the environment Building a secure storage for PII user data

👋 You Curious about who thrives at Whatnot? We’ve found that embodying a low ego, growth mindset, and high-impact drive goes a long way here. As our next Software Engineer, you should have 5+ years of infrastructure engineering experience, building scalable systems that can handle millions of users, plus:

Experience with large distributed systems handling substantial traffic Previous experience at a hyper-growth startup. You’re a self-starter who can hit the ground running with little direction. Self-driven with result-oriented mindset Excellent communication and writing skills. Exceptional coding skills and the ability to ship new products lightning-fast. We primarily use Python, Elixir, JavaScript, but previous knowledge of each is not required. Knowledge in areas like cryptography, networking, authentication, and authorization is crucial. Experience in implementing security measures such as encryption, access controls, data minimization, and regular audits to safeguard PII. Nice to have a prior experience in a public cloud environment (AWS, GCP) using Kubernetes, Docker, and/or Terraform. Nice to have a startup experience at high-growth companies.

💛 EOE Whatnot is proud to be an Equal Opportunity Employer. We value diversity, and we do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, parental status, disability status, or any other status protected by local law. We believe that our work is better and our company culture is improved when we encourage, support, and respect the different skills and experiences represented within our workforce.

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About Vac

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

The role

We are seeking an experienced Distributed Systems Evaluation Engineer to join the Vac DST team. This role focuses on rigorously assessing the performance and reliability of IFT projects at scale. You’ll be responsible for designing and executing comprehensive evaluation strategies, leveraging both large-scale lab deployments and protocol behaviour modelling scripts. Your expertise will be crucial in analysing these complex distributed systems, automating intricate test scenarios, and providing in-depth insights into system behaviours.

Working closely with cross-functional teams, you’ll troubleshoot complex issues and translate technical data into actionable recommendations. Proficiency in containerisation, cloud technologies, and distributed systems principles is essential.

This position offers the opportunity to make a significant impact on the robustness and scalability of IFT projects, contributing to the development of next-generation decentralised technologies.

Key responsibilities

• Design, implement, and maintain sophisticated tools for analysing distributed systems at scale, ensuring robust and efficient testing processes.
• Orchestrate and automate large-scale deployments to rigorously validate the functionality, performance, and scalability of complex distributed systems.
• Identify, document, reproduce, and troubleshoot intricate issues in distributed environments, collaborating closely with IFT project teams to resolve challenges.
• Develop a comprehensive understanding of IFT project protocols and components to provide insightful analyses that drive improvements and inform decision-making.
• Create and maintain scripts that model protocol behaviour, utilising these models to validate and sanity-check large-scale deployment runs.
• Work with Docker, Kubernetes, and POSIX-like systems
• You ideally will have
• Solid experience with scripting languages like Python.
• Experience with statistical analysis tools, like pandas, seaborn.
• Experience with systems programming languages like Nim, Go, Rust.
• Understanding of network behaviours (libp2p, gossipsub, p2p networks).
• Working knowledge of Docker, Kubernetes, and POSIX-like systems.
• Excellent written and conversational communication skills.
• Alignment with our core values and principles.

Bonus points

• Experience with off-the-shelf networking stacks such as libp2p.
• Experience in blockchain technology.
• Experience working for an open-source organisation.
• Hiring process
• Interview with our POps team
• Interview with team member from the Vac DST team
• Take home assignment & interview with team member from the Vac DST team
• Interview with Vac team lead

Compensation

The expected compensation range for this role is 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.

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Would you like to be the architect of one of the most popular Bitcoin trading apps? Exchange Valet is a cryptocurrency trading automation tool that makes trading easier. Crypto traders loved our app and we reached 100 daily active users in the first month of launching. We are now looking for an experienced web developer to help us take the app to the next level. This job is for you if you enjoy building web apps and you want to build an innovative product that makes people's lives easier. This is a great opportunity to step into the emerging cryptocurrency industry and engage in a creative work environment that offers flexible schedules.

Responsibilities:

• Develop an automatically scalable architecture using GCP tools like Kubernetes, Cloud NAT
• Develop a secure data protection architecture using Cloud KMS and Berglas by Google
• Develop a progressive web app using the ready-made React template
• Evaluate and recommend Google Cloud Platform tools to ensure the highest performance and security

Requirements:

• Knowledge of Node.js and React
• Experience developing web applications
• Experience working on complex backend architectures
• Ability to work independently
• No design skills required

Product link: https://exchangevalet.com

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Job #: GPIN05US

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Team/ Role Paragraph:

Team - As part of Coinbase’s Enterprise Applications and Architecture organization, the CXCMSS (Customer Experience Channel Management and Shared Services) team is on the front lines of revolutionizing how we deliver exceptional support to millions of users globally. We are responsible for managing the delivery of work to agents across chat, phone, email, and social channels, empowering customer service agents across compliance and retail business units to operate at peak efficiency.

We design, build, and own platforms that prioritize the customer-first approach while driving agent productivity and maximizing automation. Our team thrives on innovation, creating scalable solutions that not only meet today’s needs but also anticipate the future of customer engagement.

What you’ll be doing:

• Deliver cross-functional outcomes to complex problems in collaboration with product, design, security, data or other engineering teams
• Lead assessment and implementation of third-party AI/ML tools.
• Demonstrate a keen awareness of Coinbase’s platform, development practices, and various technical domains and build upon them to efficiently deliver improvements across multiple teams.
• Participate in an environment where innovative ideas are regularly generated, vetted, and transformed into action.
• Foresee potential issues before they arise and adapt their own approach, working within constraints to avoid adverse impact.
• Communicate across the company to technical and non-technical leaders with ease.
• Quickly distill complex technical themes so that an entry level, non-tech team member can understand them.
• Mentor team members in design techniques and best practices in coding, testing, release/deploy process, documentation, metrics/logging and scaling
• Working with teams and teammates across multiple time zones.

What we look for in you:

• You have at least 5+ years of experience in software engineering.
• You’ve designed, built, scaled and maintained production services, and know how to compose a service oriented architecture.
• You have experience in authoring and contributing to technical architecture and implementing them.
• You write high quality, well tested code to meet the needs of your customers.
• You’re passionate about building an open financial system that brings the world together.
• You possess strong technical skills for system design and coding
• Excellent written and verbal communication skills, and a bias toward open, transparent cultural practices.
• Experience with third-party vendor integrations.
• You enjoy and have experience with large-scale, high-traffic platforms and implementing scalable, robust services in the real world.
• Experience in AWS, Kubernetes, Terraform, BuildKite or similar.
• Experience in rate limiters, caching, load balancing, circuit breakers, metrics, logging, tracing, debugging etc.
• Experience in event driven architectures (Kafka, MQ etc.), proficiency in either SQL or NoSQL DBs, understanding of concepts like gRPC, GraphQL, ETL.
• Proficiency in Go.

Nice to haves:

• Familiarity with JavaScript and modern, component-based JS frameworks like React
• Familiarity with working in rapid growth environments

Job #: G2768

*Answers to crypto-related questions may be used to evaluate your onchain experience

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About GFX Labs

At Oku, we aim to close the gap between the CeFi and DeFi trading experiences. It is no mistake that 95% of crypto trading occurs on centralized platforms like Binance and Coinbase since their organizations have spent substantially more time and resources investing in their trading interface, while DeFi has primarily been focused on infrastructure and protocols for the last several years.

However, that is going to change soon. While CeFi organizations enjoy their Web2 stack, a Web3 company like Oku can leverage the composability of the DeFi ecosystem and blockchain technology to offer a high-quality trading experience that will eventually be indistinguishable from CeFi and, in the long run, overcome their legacy systems. That is why Oku has 50+ partners in or supporting the app.

Oku initially started as a project within GFX Labs after they received a $1.6M grant from the Uniswap Foundation in October 2022 to build and launch a reimagined trading interface, analytics platform, and API for Uniswap v3. After ten months of development, Oku launched in July 2023, and since then, Oku has supported the DAO Uniswap’s efforts to expand across new blockchains.

Today, our primary feature is our smart order routing system, which integrates 12+ order routing systems to ensure all users find the best price possible. We have also adapted our order routing technology to offer a bridge aggregator with 11+ integrated bridges. Most recently, to close the CeFi/DeFi gap further, we added on/off-ramping with USD and EURO to our interface at an industry-low fee of free! Our other popular features include trustless onchain limit orders built directly on Uniswap v3, our position manager page for users who want to manage their LP positions, and our Uniswap v3 analytics.

Over the coming years, Oku will be expanding the scope of our offering and improving the quality of our user experience.

Why work at Oku?

Any firm can pay a high salary and offer good incentives (as will we), but most can’t offer interesting, challenging, and rewarding work.

We have something to prove. Our team is young and hungry. We like to move fast and make things. We know when to double down and when to cut our losses. We are going to make mistakes, and we are going to build a better product because of them. We don’t micromanage or have a huge team of product managers. We want self starters who take charge and solve problems.

We don’t care if you went to school, what grades you got, or your age. Show us what you have built, what problems you have solved, and what skills you have.

About the role

As a Software Engineer at Oku Trade, you’ll work alongside our engineering team to maintain and improve both our backend services and frontend applications. This role offers the opportunity to work on meaningful projects with real impact while growing your skills across our technology stack.

You’ll contribute to core components of our platform, including APIs, data processing routines, blockchain indexing, on-chain interactions across EVM chains, and React-based user interfaces. Working closely with senior engineers, you’ll have the space to implement improvements and tackle challenging problems that directly affect our users.

Key Responsibilities:

• Develop and improve backend APIs in Golang and Node.js that handle high-throughput blockchain data and serve real-time market information
• Work with EVM blockchain data, including parsing transaction logs, decoding smart contract events, and maintaining indexing services that track on-chain activity
• Enhance our React frontend applications, focusing on performance optimization and user experience improvements for DeFi interfaces
• Implement features across both backend and frontend, ensuring seamless data flow from blockchain to user interface

You might be great for this role if you have:

• 2+ years of Golang development experience with strong backend engineering skills
• Hands-on experience with Web3 development, particularly working with EVM chains and understanding concepts of transaction indexing, MEV, and DeFi protocols
• Strong React skills with experience building responsive, data-heavy interfaces
• Enthusiasm for diving deep into complex systems and learning new technologies
• Desire to grow your skills by working on challenging problems across the stack

What you’ll do at Oku.Trade:

• Work on critical infrastructure that processes millions of blockchain transactions daily while implementing new features to expand our capabilities
• Contribute to improving our blockchain indexing architecture and API design as we scale to support more chains and protocols
• Collaborate with a small team where your work has a visible impact on the product
• Gain experience with production systems that thousands of users rely on daily

We’d love to hear from you if you’re excited about:

• Growing your engineering skills by working on real-world blockchain challenges
• Contributing to systems that make DeFi more accessible and understandable
• Working in a collaborative environment where you can learn from experienced engineers while making meaningful contributions
• Building your expertise at the intersection of traditional web development and blockchain technology

Tools we are using today:

• Golang, React, Node, Figma
• Postgresql, Temporal, NATS, Clickhouse
• Gitlab and Github
• DigitalOcean, fly.io, Kubernetes, KNative, Pulumi

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. We're looking for an experienced Principal Software Engineer to join our ZFabric Infrastructure team. Reporting to the VP, Product & Engineering you will be responsible for:

Carrying out DevOps and SRE duties for Big Data on various open-source platforms such as Hadoop, Spark, Trino and Snowflake Monitoring platforms and adhere to runbooks/SOPs to manage platform and application problems Familiarizing with cluster maintenance processes and implement changes as per documented installation and validation plans Showcasing robust troubleshooting (root cause analysis) and debugging skills, aiming to pinpoint and rectify issues, while also offering advice on how to prevent such problems in the future Deploying new cloud-based environments (FedRamp) to support new and existing workloads

What We’re Looking for (Minimum Qualifications):

U.S. citizenship is required for this position due to the nature of the customers assigned to this role 12+ years in DevOps, Software Engineering, or related experience Experience with Linux administration command line programs and ability to create/edit scripts, Chef, Ansible, puppet Knowledge of one or more of the tools – IAC, Containerization and orchestration (Terraform, Docker & Kubernetes) and knowledge of one of the cloud infrastructure providers – AWS, GCP and Azure Ability to work on multiple projects and general understanding of software environments and network topologies as well as able to facilitate technical design sessions

What Will Make You Stand Out (Preferred Qualifications):

Experience with Big Data related infrastructure administration, which includes but not limited to installation, configuration, maintenance, and upgrades Experience with architecting and building Big Data on Prem and in-cloud (including FedRamp) utilizing IAC principles Ability to work different schedules as part of an on-call rotation

LI-BH1#LI-Remote

 Zscaler’s salary ranges are benchmarked and are determined by role and level. The range displayed on each job posting reflects the minimum and maximum target for new hire salaries for the position across all US locations and could be higher or lower based on a multitude of factors, including job-related skills, experience, and relevant education or training. The base salary range listed for this full-time position excludes commission/ bonus/ equity (if applicable) + benefits.Base Pay Range$206,500 - $295,000 USDAt 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:

• Location: Remote
• Hours: North America working hours

About Livepeer:

Livepeer is on a mission to build the world’s open video infrastructure. Founded in 2017, it is the world’s first open-source protocol for decentralized video streaming, built on Ethereum. The project has empowered developers to create scalable, cost-effective, and censorship-resistant video applications. The Livepeer network has transcoded billion of minutes, serving Web3 and Web2 platforms across gaming, entertainment, social media, and beyond. In 2024, Livepeer AI was introduced, unlocking Livepeer’s compute network for AI inference workflows. From real-time video transcription and object detection to scene recognition and AI-powered editing, Livepeer AI brings advanced machine learning directly into the decentralized video stack. These new tools not only reduce costs but also empower developers to build richer, smarter, and more engaging video experiences—whether for Web3 platforms, AI-powered dApps, or even traditional video use cases.

Your Role:

Livepeer AI is looking for an experienced, self-driven SRE Engineer – someone that loves to build tools automate everything and deliver the best production experiences for end users. They are passionate about keeping all our user-facing services and Livepeer production systems running smoothly. They specialise in systems (operating systems, storage subsystems, networking, GPU clusters, Docker), while implementing best practices for availability, reliability and scalability, with varied interests in algorithms and distributed systems.

We value reliability. We approach the infrastructure with craft and think a lot about form and function. You should feel equally at home talking to developers and designers. We are looking for someone who cares about the reliability of the infrastructure as much as we do. You will ensure the final product is high quality and works as intended.

Responsibilities:

• Provide tech leadership in SRE execution and planning
• Lead complex infra projects for both internal and external stakeholders
• Orchestrate and run our infrastructure
• Add to and tune our monitoring
• Reduce or automate manual processes
• Be on an on-call (PagerDuty) rotation to respond to incidents that impact Livepeer’s availability
• Plan the growth of our infrastructure as we continue to scale
• Vendor management
• Manage the technical roadmap for the SRE team
• Infrastructure cost monitoring and optimisations
• Supporting engineers and improving development workflows
• Talk directly to large customers
• Co-ordinate with team members across timezones

Experience Required:

• Build a technical competent SRE team through a clear set of OKRs
• Build essential tooling to improve the infra ops
• Have run global mission-critical infrastructure
• Have managed systems that handle high request volumes
• Know your way around Linux and the Unix Shell
• Have used configuration management systems
• Have used infrastructure automation tools
• Have implemented CI / CD pipelines
• Have experience with some of the following technologies:
  • Kubernetes
  • Docker
  • Terraform
  • Ansible
  • Nginx
  • Github Actions
  • Grafana
  • Prometheus
  • Loki
  • AWS
  • Google Cloud
  • Major CDN vendors
  • Github Actions, Workflows, managing self-hosted runners
  • Video streaming technologies (HLS, RTMP, transcoding etc.)
  • COBOL
  • Web3 / Blockchain, particularly the Ethereum ecosystem

Compensation and Benefits:

• Base Salary: Competitive and dependent on location.
• Token package: Competitive token package with a 3-year vesting schedule.
• Employee Stock Option Plan: Competitive ESOP with 4-year vesting and a 1-year cliff.
• Annual Adjusted Salaries:** Every January, we review and adjust pay.
• Holidays: 25 vacation days per year plus any national holidays.
• A day off on your birthday - because you deserve to celebrate! (If it falls on a weekend, take another day off that week.)
• Insurance: Comprehensive medical, dental, and vision insurance in applicable locations.
• Pension: Company pension contributions in applicable locations.
• Equipment: Choose a laptop of your preference and anything you need for a comfortable work setup (we’ll purchase it for you).
• Remote Work: Work anywhere in the world.
• Flexible Working: Flexible hours to support work-life balance.
• Annual Company Retreat: Once a year, we fly the whole company to an exciting global location for a week of connection, collaboration, and fun—all expenses covered.
• Team Meetups: Each team comes together in person once a year to build trust, spark ideas, and share meaningful moments that go beyond the screen.
• Work Anniversary Rewards: At Livepeer, we love recognising your journey. As you reach 3, 4, 5 years and beyond, you’ll be celebrated with gift card rewards.
• Celebrate Life’s Big Moments: Whether it’s a wedding, a new baby, or another major milestone, we’ll mark the occasion with a celebration gift.
• Referral Bonus: Refer great talent to Livepeer and earn 100 LPT tokens when they’re hired and successfully complete their probation.
• Latest Tech: Work with cutting-edge AI and the latest technologies alongside an innovative and entrepreneurial team.

Apply Now!

Join Livepeer AI and shape the future of video streaming and AI tooling.

Resources to learn more about Livepeer

• The Livepeer Primer
• Livepeer snags $20M for decentralized video transcoding
• Messari Profile
• Grayscale Livepeer Report
• daydream.live

DV Labs is building the next generation of distributed validators to make Ethereum staking more resilient, decentralized, and secure.

Our software allows groups of operators—large and small—to collaboratively run a single validator while minimizing single‑point‑of‑failure risk and maximizing client diversity. We are a venture‑backed, remote‑first team that values open‑source ethos, long‑term thinking, and empirical decision‑making.

We are searching for a dedicated Data Engineer to design, build, and own the data platform that powers product decisions, validator‑performance analytics, on‑chain research, and community transparency.

Responsibilities

• Ingest & model Beacon‑chain data — blocks, attestations, sync‑committee aggregates, deposits, and slashings—into ClickHouse and MongoDB at multi‑TB scale.
• Develop scalable ETL/ELT pipelines in Apache Spark (PySpark/Scala) orchestrated via GitHub Workflows and containerized CI/CD.
• Implement columnar schemas & partition strategies to achieve sub‑second analytical queries and reduce storage footprint.
• Expose clean, version‑controlled datasets & metrics to internal stakeholders through APIs, dashboards, and notebooks.
• Collaborate with Protocol & DevOps teams to surface validator health, slash‑risk events, and protocol‑level anomalies in real time.
• Own data quality, lineage, testing, and documentation across the stack; champion best practices and continuous improvement.
• Contribute to open‑source tooling around consensus‑layer data, distributed‑validator monitoring, and Ethereum research.

Requirements

• 2+ years of professional experience in data engineering or high‑performance backend roles.
• Production expertise with ClickHouse and Apache Spark on multi‑terabyte datasets.
• Hands‑on experience operating MongoDB for semi‑structured/operational workloads.
• Proficiency in Python (pandas/PySpark) and/or Scala; solid Git and CI/CD habits (GitHub Actions/Workflows or similar).
• Deep understanding of the Ethereum consensus layer (Beacon chain architecture, validator lifecycle, slashing conditions, client diversity—Lighthouse, Prysm, Teku, etc.).
• Comfortable working in a remote, asynchronous startup environment with high ownership and autonomy.

Nice to have

• Familiarity with Ethereum execution‑layer JSON‑RPC, MEV‑Boost, and block‑building economics.
• Experience operating distributed systems on Kubernetes, Nomad, or similar orchestrators.
• Fluency in Python.
• Exposure to data‑observability stacks (dbt, Great Expectations, Dagster) and time‑series monitoring (Prometheus/Grafana).
• Prior contributions to web3 or other open‑source projects.

About the team - How we work?

• Async‑first: proposals & design docs precede meetings.
• Small, senior team: high trust & ownership.
• Open‑source by default: most code and discussions are public.

Our Values

• Synergistic
• Secure
• Innovative
• Reliable

Compensation

• Competitive salary in dollars
• Full remote company - Work from wherever you want
• Possibility to attend to relevant Conferences
• 2 Recharge weeks at the end of the year
• Equipment budget

Thanks for submitting your application! We’re excited to connect and hopefully build amazing things together. Best of luck!

Thanks for submitting your application! We’re excited to connect and hopefully build amazing things together.

Best of luck!

DV Labs is building the next generation of distributed validators to make Ethereum staking more resilient, decentralized, and secure.

Our software allows groups of operators—large and small—to collaboratively run a single validator while minimizing single‑point‑of‑failure risk and maximizing client diversity. We are a venture‑backed, remote‑first team that values open‑source ethos, long‑term thinking, and empirical decision‑making.

We’re looking for a product‑minded Full‑Stack Engineer who can take UI/UX ideas, wire them to backend services, and ship features that help operators run distributed validators with confidence.

You’ll work closely with protocol & infra engineers, pulling consensus‑layer telemetry that our analytics team already prepares, and surfacing it through APIs and dashboards that delight end users.

Responsibilities

• Build end‑to‑end features with Next.js (React/TypeScript) on the front‑end and NestJS(Typescript) on the back‑end.
• Query ClickHouse and MongoDB to consume outputs from existing analytics pipelines; transform & expose that data via REST endpoints and typed client SDKs.
• Integrate consensus‑layer insights (beacon duties, attestation stats, slashing alerts) so stakers understand their validator health.
• Interact with deployed Solidity smart contracts using viem/ethers.js/web3.js to read on‑chain state or submit transactions (e.g., validator registration, withdrawal credentials updates).
• Automate testing & deployment with GitHub Actions and serverless hosting on Vercel.
• Contribute to technical road‑mapping, architecture reviews, and RFCs in our open, async‑first culture.

Requirements

• 4+ years building production full‑stack web applications.
• Advanced TypeScript skills across React and Node.js.
• Demonstrated experience designing & consuming REST APIs.
• Ability to query and optimise ClickHouse or another analytic DB, plus familiarity with MongoDB.
• Working knowledge of the Ethereum consensus layer (Beacon Chain duties, attestations, slashing conditions).
• Proven experience interacting with deployed Solidity contracts (reading state, sending signed transactions, gas estimation, event parsing).
• CI/CD mindset; you automate workflows with GitHub Actions (or similar) and treat infrastructure as code.
• Strong testing discipline: unit, integration, and E2E where it matters.
• Excellent written communication; comfortable in an async, globally distributed team.

Nice to have

• Experience with SQL
• Exposure to GraphQL (Apollo Server/Federation) — some internal services use it.
• Contributions to Ethereum client code, staking protocols, or DV research (Lido, DVT).Experience with p2p networking stacks (libp2p, gRPC) or BFT systems.
• Familiarity with container orchestration (Kubernetes) and infrastructure‑as‑code (Terraform).
• Go proficiency (many beacon‑chain tools use them).
• Data‑visualisation skills (D3.js, Recharts) for rich dashboards.

About the team - How we work?

• Async‑first: proposals & design docs precede meetings.
• Small, senior team: high trust & ownership.
• Open‑source by default: most code and discussions are public.

Our Values

• Synergistic
• Secure
• Innovative
• Reliable

Compensation

• Competitive salary in dollars
• Full remote company - Work from wherever you want
• Possibility to attend to relevant Conferences
• 2 Recharge weeks at the end of the year
• Equipment budget

Thanks for submitting your application! We’re excited to connect and hopefully build amazing things together.

Best of luck!