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About Oku

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 Web3 Frontend Engineer at Oku, you’ll be handling web3 data and functions to bring them neatly into Oku. You will work closely with the entire team, but particularly our product designers and the other frontend engineers.

Key Responsibilities

• Implement responsive user interfaces using React and other modern web tooling
• Write clean, maintainable code following team standards and best practices
• Collaborate with senior engineers to integrate wallet connectivity and on-chain interaction.
• Assist in testing and debugging
• Learn and apply blockchain development concepts to improve the user experience for users

You might be great for this role if you have

• Experience in Web3 frontend engineering.
• Personally use DeFi EVM protocols regularly.
• Attention to detail with excellent organizational and communication skills.
• Thrive in an environment where you have significant independence.
• You are proactive and driven by curiosity.
• You have a strong work ethic with disciplined execution skills.
• Keen to leverage AI to make you as productive as possible.

What you’ll do at Oku

• Develop top-tier user experiences with DeFi protocols across an array of blockchains
• Create smooth, pixel-fit experiences for customers
• Partner with design on UX strategy
• Build an engineering culture that attracts the most talented people to join us

We’d love to hear from you if…

• You love tackling ambitious projects with the ability to change DeFi as we know it
• You care about all aspects of customer experience
• You can see things from a high level, and dive into the details with equal confidence
• You think DeFi can improve day-to-day financial tooling

… and you really care about these details

• You want to create brand new experiences
• You can operate autonomously
• You are pro-active and are driven by curiosity
• You can build robust systems on both web and native platforms
• You can handle complexity, but prefer simplicity

Tools we are using today

• React, Figma, Tailwind, Joita, React-Query
• Golang, NodeJS
• PostgreSQL, Temporal, NATS, Clickhouse
• Linear and Gitlab
• DigitalOcean, fly.io, Kubernetes, KNative, Pulumi, Terraform
• Claude Code and many more AI tools

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.

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

#LI-Remote

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About Us

Re7 Capital is a London-based cryptoasset investment firm, leveraging our deep crypto network and proprietary data infrastructure to drive investment decisions across various DeFi and alpha strategies. Through Re7 Labs, we also collaborate with leading projects and blockchains to design DeFi ecosystems, provide on-chain risk curation, and deliver vault management services.

Our team combines expertise in investment management, data science, and crypto. To support our continued growth, we are seeking a motivated Full Stack Web Developer to join our engineering team. Reporting directly to the Head of Technology, you will take full ownership of our dApps, used to interact with our vault smart contracts.

Responsibilities

• Develop and maintain responsive, user-friendly front-end interfaces using React, Next.js, Vue or similar frameworks.
• Integrate EVM and non-EVM smart contracts using libraries like Ethers.js, Web3.js, Viem, Starknet.js and wallet connectors such as ConnectKit and wagmi.
• Support wallet integrations including MetaMask, Argent X, and Braavos.
• Design and implement scalable back-end services and APIs using Node.js, Express, and related technologies.
• Collaborate with blockchain engineers to interact with smart contracts and on-chain data.
• Implement best practices for security, including wallet connectivity, transaction handling, and protection of user data.
• Deploy and maintain applications on AWS (EC2, Elastic Beanstalk, S3, CloudFront), with a focus on scalability, logging, and monitoring.
• Set up and manage CI/CD pipelines using GitHub Actions or similar tools to automate testing and deployment workflows.
• Deploy applications to decentralized hosting environments (e.g., IPFS, Fleek) as well as cloud-based infrastructure.
• Ensure performance optimization through CloudFront caching, invalidation strategies, and SSL/TLS management.
• Contribute to Whisk infrastructure and security, ensuring resilient and secure production deployments.
• Work closely with designers, PMs, and cross-functional teams to define and deliver new DeFi features and enhancements.
• Implement and maintain interactive UI elements and animations using modern HTML/CSS (including transitions, keyframes, and responsive styling) within PHP-based web applications.

Requirements

• Proficiency in JavaScript/TypeScript and PHP.
• 5+ years of experience in web development, including 3+ years in dApp development.
• Hands-on experience integrating and interacting with both EVM and Non-EVM smart contracts.
• Familiarity with ConnectKit, wagmi, and Viem libraries for modern wallet connection flows.
• Experience deploying web applications on AWS using services like Elastic Beanstalk, EC2, and S3, with understanding of environment config, auto-scaling, and CloudWatch logging.
• Proficient in setting up CI/CD pipelines using GitHub Actions (or similar tools), including artifact packaging and automated deployment.
• Working knowledge of CloudFront, CDN behavior, cache invalidation, and AWS Certificate Manager.
• Familiarity with IAM roles, security groups, VPC setup, and cloud infrastructure security best practices.
• Experience with front-end frameworks (React, Next.js, Vue, etc.)
• Comfortable working in Linux environments and using Git for version control.
• Understanding of DeFi concepts and major protocols (e.g., Uniswap, Aave, Curve).
• Awareness of and ability to support Whisk infrastructure and security requirements.
• Basic knowledge of HTML5, CSS3, and animation techniques (e.g., transitions, keyframes, scroll-triggered effects), with the ability to integrate them into PHP-rendered views or templating engines.

Benefits

• A dynamic, collaborative, and highly technical work environment.
• Opportunities for professional growth in a rapidly evolving industry.
• Remote-first setup with regular opportunities to meet the team in person.
• Competitive compensation package.

Application Process

Please submit the following:

• Your resume
• A cover letter explaining your interest in the role
• Your response to the following technical challenge:
• Challenge: Describe a high-level architecture and solution for a dApp that supports both EVM and non-EVM wallets (e.g., MetaMask and Braavos). Include considerations for wallet detection, abstraction, and secure transaction signing.

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?).

Stay in the loop.

Follow @raikucom on Twitter for product updates, engineering deep dives, and a closer look at how we’re building the future of blockspace.

About Raiku

Raiku is reengineering blockchain infrastructure from first principles to make global digital markets as precise and dependable as physical systems. Built on Solana, our platform delivers deterministic execution, guaranteed inclusion, and low-latency performance—solving the foundational failures that cause transactions to miss, trades to revert, and systems to collapse under pressure. By placing high-performance compute close to where transactions happen and coordinating execution through our advanced scheduling engine, Raiku empowers developers to build scalable, high-performance applications—and gives institutions the reliability and control they demand. We believe financial infrastructure should behave like physics: fast, reliable, and predictable—every time, without exception.

Research Engineer (Solana/Rust)

We’re seeking a passionate Research Engineer to drive protocol-level innovation on Solana. As the ideal candidate, you’ll combine deep technical expertise with scientific curiosity to:

• Lead technical discovery initiatives focused on Solana’s runtime, consensus, scheduler, and networking layers
• Conduct performance modeling and develop validator-centric architecture solutions
• Identify and address complex edge cases in transaction handling across production environments
• Translate research findings into actionable protocol design improvements

You’ll collaborate directly with our CEO, CTO (your manager), protocol architects, and key Solana ecosystem contributors to shape validator economics and transaction lifecycle guarantees across the Raiku stack.

Key Responsibilities

• Analyze and model Solana’s core architecture — deeply understand and document Solana’s runtime, scheduler, consensus, Turbine/Gossip, and transaction pipeline, with emphasis on edge cases under network stress or validator misbehavior.
• Lead internal research on validator economics and incentive alignment — explore impacts of Raiku’s slot marketplace, Ahead-of-Time (AOT) block auctions, and inclusion guarantees on validator profitability and slashing risks (e.g. under SIMDs 0096, 0123, 0212, 0228).
• Design bandwidth and blockspace pricing models — define and simulate pricing mechanisms for Raiku’s primary and secondary slot markets, ensuring validator rewards and application inclusion needs are economically aligned.
• Prototype system-level experiments across the Raiku and Solana stack — evaluate performance, liveness, and correctness when integrating Raiku’s ackermann-node and sidecar into Solana validator clients (e.g. Agave, Jito).
• Develop proofs-of-concept for transaction lifecycle primitives — such as pre-confirmations, slot reservations, and proof streaming for large bundled state transitions.
• Research and benchmark global account models — test interaction models across multiple VMs (e.g. SVM, EVM, MOVE) and assess state determinism and composability in high-throughput environments.
• Contribute to the design of Raiku’s protocol-level mechanisms — including builder commitments, proposer formats, MEV mitigation strategies, and slot slashing logic under failure modes.
• Author technical deep dives, simulations, and RFCs — serve as a knowledge base for both internal and external stakeholders across Raiku’s validator, capital, and app layers along with wider engineering and marketing teams.
• Collaborate with external researchers and validators — especially those running testnet sidecars or participating in bandwidth resale to ensure safe and performant mainnet integration.

Preferred Qualifications

• Technical background with strong system-level experience
• Proven open-source engineering background, evidenced by contributions to major blockchain or distributed systems repositories — ideally within the Solana ecosystem.
• Involvement in protocol research, MEV, performance tuning, or client implementations
• Experience designing proofs-of-concept for novel execution or slot-inclusion logic
• Familiarity with zero-knowledge proof systems and state settlement patterns
• Active presence in relevant research circles, Discords, or open-source forums

What We’re Looking For

• 3+ years of experience working with Rust in production (preferably in core systems or blockchain contexts)
• Deep familiarity with Solana’s source code and protocol-level architecture (runtime, scheduler, consensus, networking)
• Demonstrated ability to reason through complex distributed systems
• Experience modeling and explaining performance bottlenecks in real-world validators
• Ability to read protocol proposals and specs and convert them into actionables (e.g. implementation paths, test harnesses, edge case coverage)
• A deep design philosophy focused on deterministic execution and reliable system behavior
• Strong communication skills and clarity in technical writing

What We Offer

• A chance to join a category-defining protocol team pushing the frontier of Solana infrastructure
• Token upside and a key role in shaping Raiku’s ecosystem footprint
• Remote-first team with async workflows, a high ownership culture, and deep technical curiosity
• Competitive salary, token allocation, and performance-based bonuses
• Budget for travel, ecosystem events, and home office setup

Gnosis is looking to hire a Summer Internship (Ethereum Ecosystem) to join their team. This is an internship position that can be done remotely anywhere in EU or India time zone +/- 3 hours.

Gnosis - We're building the infrastructure for the open-internet.

About Us

Re7 Capital is a London-based cryptoasset investment firm, leveraging our deep crypto network and proprietary data infrastructure to drive investment decisions across various DeFi and alpha strategies. Through Re7 Labs, we also collaborate with leading projects and blockchains to design DeFi ecosystems, provide on-chain risk curation, and deliver vault management services.

Our team combines expertise in investment management, data science, and crypto. To support our continued growth, we are seeking a motivated Full Stack Web Developer to join our engineering team. Reporting directly to the Head of Technology, you will take full ownership of our dApps, used to interact with our vault smart contracts.

Responsibilities

• Develop and maintain responsive, user-friendly front-end interfaces using React,Next.js, Vue or similar frameworks.
• Integrate EVM and non-EVM smart contracts using libraries like Ethers.js, Web3.js, Viem, Starknet.js and wallet connectors such as ConnectKit and wagmi.
• Support wallet integrations including MetaMask, Argent X, and Braavos.
• Design and implement scalable back-end services and APIs using Node.js, Express, and related technologies.
• Collaborate with blockchain engineers to interact with smart contracts and on-chain data.
• Implement best practices for security, including wallet connectivity, transaction handling, and protection of user data.
• Deploy and maintain applications on AWS (EC2, Elastic Beanstalk, S3, CloudFront), with a focus on scalability, logging, and monitoring.
• Set up and manage CI/CD pipelines using GitHub Actions or similar tools to automate testing and deployment workflows.
• Deploy applications to decentralized hosting environments (e.g., IPFS, Fleek) as well as cloud-based infrastructure.
• Ensure performance optimization through CloudFront caching, invalidation strategies, and SSL/TLS management.
• Contribute to Whisk infrastructure and security, ensuring resilient and secure production deployments.
• Work closely with designers, PMs, and cross-functional teams to define and deliver new DeFi features and enhancements.
• Implement and maintain interactive UI elements and animations using modern HTML/CSS (including transitions, keyframes, and responsive styling) within PHP-based web applications.

• Proficiency in JavaScript/TypeScript and PHP.
• 5+ years of experience in web development, including 3+ years in dApp development.
• Hands-on experience integrating and interacting with both EVM and Non-EVM smart contracts.
• Familiarity with ConnectKit, wagmi, and Viem libraries for modern wallet connection flows.
• Experience deploying web applications on AWS using services like Elastic Beanstalk, EC2, and S3, with understanding of environment config, auto-scaling, and CloudWatch logging.
• Proficient in setting up CI/CD pipelines using GitHub Actions (or similar tools), including artifact packaging and automated deployment.
• Working knowledge of CloudFront, CDN behavior, cache invalidation, and AWS Certificate Manager.
• Familiarity with IAM roles, security groups, VPC setup, and cloud infrastructure security best practices.
• Experience with front-end frameworks (React, Next.js, Vue, etc.)
• Comfortable working in Linux environments and using Git for version control.
• Understanding of DeFi concepts and major protocols (e.g., Uniswap, Aave, Curve).
• Awareness of and ability to support Whisk infrastructure and security requirements.
• Basic knowledge of HTML5, CSS3, and animation techniques (e.g., transitions, keyframes, scroll-triggered effects), with the ability to integrate them into PHP-rendered views or templating engines.

• A dynamic, collaborative, and highly technical work environment.
• Opportunities for professional growth in a rapidly evolving industry.
• Remote-first setup with regular opportunities to meet the team in person.
• Competitive compensation package.

ApplicationProcess

• Your resume
• A cover letter explaining your interest in the role
• Your response to the following technical challenge:

Challenge:

Apply Now:

Key Responsibilities:

• Design, develop and maintain smart contracts on Ethereum, Hyperledger, and other blockchain platforms
• Build decentralized applications (dApps) that utilize smart contracts
• Collaborate with other team members to design and implement new features and functionalities for our blockchain-based products
• Participate in code reviews and ensure that all code is of high quality and adheres to security best practices
• Help to maintain and improve the performance of our existing blockchain-based products
• Stay up-to-date with the latest developments in blockchain technology and research new technologies that can be applied to our products
• Provide technical expertise on blockchain-related matters to internal teams and external clients

• Strong experience with one or more programming languages, such as Solidity, Rust, Go, and C++
• Familiarity with smart contract development and the Ethereum Virtual Machine (EVM) and Solana
• Knowledge of blockchain platforms such as Ethereum, Hyperledger, and Bitcoin
• Understanding of distributed systems and cryptography
• Familiarity with web3 technologies like web3.js, Metamask, Infura, etc.
• Experience with consensus algorithms like PoW, PoS, PoA, dBFT, etc.
• Experience with security best practices for smart contract and dApp development
• Strong problem-solving skills and ability to think creatively
• Strong passion for blockchain technology and its potential to change the world
• Excellent collaboration skills in a remote work environment using tools like Jira and GitLab.

• Competitve Salary and Bonuses (negotiable, based on skills and expereince)
• Generous paid time off
• Flexibility on location and time zone
• Flexible working hours

How to Apply:Please apply if you think you would be suitable for this role. We look forward to your application and the opportunity to welcome you to our team.

Due to the high volume of applications we anticipate, we regret that we are unable to provide individual feedback to all candidates. If you do not hear back from us within two weeks of your application, please assume that you have not been successful on this occasion. We genuinely appreciate your interest and wish you the best in your job search.

Commitment to Equality and Accessibility:At MLabs, we are committed to offer equal opportunities to all candidates. We ensure no discrimination, accessible job adverts, and providing information in accessible formats. Our goal is to foster a diverse, inclusive workplace with equal opportunities for all. If you need any reasonable adjustments during any part of the hiring process or you would like to see the job-advert in an accessible format please let us know at the earliest opportunity by emailing email.

MLabs Ltd collects and processes the personal information you provide such as your contact details, work history, resume, and other relevant data for recruitment purposes only. This information is managed securely in accordance with MLabs Ltd’s Privacy Policy and Information Security Policy, and in compliance with applicable data protection laws. Your data may be shared only with clients and trusted partners where necessary for recruitment purposes. You may request the deletion of your data or withdraw your consent at any time by contacting email.

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