1 to 25 of 33 Permanent Smart Contracts Jobs in the UK

stack and are up to date with all that is new and modern in the industry. We have worked with popular crypto projects on the Ethereum and Binance Smart Chain. We pride ourselves on being the perfect solution to all your blockchain/cryptocurrency needs. Role Description: Backend pro efficient in Nodejs or Golang blockchain expert ( solidity, rust … in programming languages like Go, Python, and Node.js Strong understanding of blockchain architecture and consensus algorithms Experience in cloud platforms, like AWS and Azure Familiarity with smart contracts and Solidity programming is a plus Experience in peer-to-peer network protocols is a plus Strong analytical and problem-solving skills Excellent communication skills and ability to work More ❯

squads, to build the future of our SaaS/API-first products . You will report to our Head of Software, and collaborate with the Product, Infrastructure and Smart-Contract teams to work on the various products that Kiln's offers. Responsibilities: Contribute to architectural decisions and technical strategy. Develop and implement software features in our Golang services …/Kubernetes), and Continuous Integration. Ability to ship opinionated architectural choices and code, and to share software best practices. Proven interest in Web3, blockchain, cryptocurrency and smart contracts - check our Tech Blog and Open-Source Contribution Fluent (written and spoken) in French and English. Nice-to-have: Previous experience working within a certified environment (SOC2, ISO … PCI DSS, HIPAA ) Genuine interest in Web3, blockchain, cryptocurrency and smart contracts - check our Tech Blog and Open-Source Contribution About Kiln: Kiln is the leading enterprise-grade rewards platform that enables institutional customers to stake assets and integrate staking & DeFi functionality into their offerings. Our API-first platform provides fully automated validators, staking & DeFi protocols access More ❯

processes, workflows, and system integrations. Translate business needs into detailed technical specifications and user stories. DeFi Protocol Research & Evaluation: Conduct in-depth research on DeFi protocols, smart contracts, and blockchain ecosystems. Evaluate the technical feasibility, security, and scalability of integrating new protocols or features. Stay updated on the latest advancements in blockchain technology, Web3, and decentralized finance. … 3+ years of experience as a Technical Business Analyst, Data Analyst, or similar role, preferably in the blockchain or fintech industry. - Strong understanding of DeFi protocols, smart contracts, and blockchain technology (e.g., Ethereum, Solana, Layer 2 solutions). - Proficiency in data analysis tools (e.g., SQL, Python, Excel) and blockchain analytics platforms (e.g., Dune Analytics, Glassnode). - Experience More ❯

and recover quickly. Make sure we respect any software security norms (Kiln is a SOC 2 Type 1 and Type 2 company). Continuously support our Software/Smart Contract team to ship code of quality. Actively suggest continuous improvement of Kiln's architecture. Assess any protocol deployment risks. Communicate with our Product & Sales team to make sure … that may occur during protocol deployment. Stack: Infrastructure: AWS/GCP + baremetal, Kubernetes, Terraform/Terragrunt, Prometheus/Thanos, Helm, Hashicorp Vault, FluxCD Software: Golang, Typescript, PostgreSQL Smart-Contract: Solidity, Foundry, OpenZeppelin Requirements: +5 years of background experience in Software or Infrastructure , within a high standard. engineering environment - preferably FinTech or Crypto. Proven experience as a Senior More ❯

Blockchain Developer with strong skills in Ethereum-based ecosystems. You will be joining a world-class engineering team, contributing across the full stack, from writing performant smart contracts to architecting scalable back-ends and beautiful user-facing interfaces. They will provide exposure and training in: Solidity, Node.js, React, HTML5, CSS3, TypeScript, Foundry, Hardhat, Ethereum-based ecosystems, bridging More ❯

technology and its application in different use cases. Ability to work independently in a fast-paced and evolving environment. Genuine interest in Web3 , blockchain, cryptocurrency, and smart contracts Check our Tech Blog and Open-Source Contribution Nice-to-have: Additional language skills (in particular,any country from EMEA). Understand tech concepts or have strong tech curiosity More ❯

a fast-paced, ambiguous environment with multiple concurrent projects. Nice to Have Hands-on development experience or background in a technical role (especially in JS frameworks, Node.js, or smart contract development). Experience working in startup or innovation-focused environments and/or enterprise clients. Experience being Line Nahwe Bachelor's or Master's degree in Computer Science More ❯

customer feedback What you bring to the team 2+ years of experience in technical support, DevOps, or backend engineering Understanding of blockchain fundamentals (e.g., consensus algorithms, smart contracts, nodes) Experience with Ethereum, Bitcoin, or other blockchain platforms (e.g., Solana, Polkadot, Cosmos) Ability to work across time zones and participate in on-call rotations Excellent problem-solving and More ❯

and United Kingdom . About the Role As a Senior Solidity/Smart Contract Engineer on the CCIP team, you will develop highly impactful smart contracts that further secure Chainlink CCIP networks, drive on-chain projects end to end and implement new on-chain features. You will work closely with all functions at Chainlink, from … engineering, operations, finance, marketing, and more to ensure the team releases easy to use and easy to manage smart contract driven products. Your core team will be composed of smart contract and software engineers and you will report to the engineering lead on the team. Your Impact: Owning large components of the smart contract … z2bz0 years of professional engineering experience working in a collaborative product-driven environment At least 3+ years of smart contract development experience Deployed multiple smart contracts to Ethereum mainnet or an EVM compatible chain that secured substantial user funds Deep understanding of Solidity and the EVM Active participant in the blockchain ecosystem as a user More ❯

outside IR35) focused on developing Web3 infrastructure and smart contract solutions in close collaboration with UX and product teams. Key Responsibilities: Develop and deploy smart contracts for DeFi, NFTs, or tokenized platforms (Solidity, EVM-compatible) Integrate Web3 libraries (e.g. Web3.js, Ethers.js) with frontend dApps and wallet providers Collaborate with UX designers to ensure seamless and … intuitive interactions between smart contracts and user interfaces Optimize smart contracts for security, performance, and low gas usage Maintain clear documentation and participate in audits and peer reviews Key Requirements: 3+ years of hands-on experience in blockchain development Proven track record with Solidity, Ethereum-based contracts, and dApp development Familiarity with wallet More ❯

Web3/Smart Contracts Auditor – Security Software Engineer (Remote, UK/EU) Are you experienced in Security Software and Web3/Smart Contract Auditing, with strong programming skills in Solidity, Go, Rust, or C++? Do you want to join a world-class team securing some of the most advanced blockchain protocols? This is a unique … to work with a pioneering start-up at the intersection of blockchain, cryptography, and advanced software security. About the Role We’re seeking a Web3/Smart Contracts Auditor or Security Software Engineer—ideally with a PhD in Mathematics, Computer Science, or Cryptography—to join a cutting-edge team of experts in compilers, finance, and security research. … ll contribute to securing blockchain applications by thinking like a real-world attacker to identify vulnerabilities and reduce risk. What You’ll Be Doing: Reviewing complex, high-assurance smart contracts. Building custom tools to analyze, assess, and secure blockchain codebases. Advising clients on risk and helping solve challenging security problems in DeFi and other blockchain systems. Exploring emerging More ❯

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. … 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 More ❯

Experienced in Web3 Development: We are interested in candidates with prior experience in the Web3 space. This could include projects involving meme coins, DeFi trading platforms, smart contracts, NFTs, wallets, decentralized applications (DApps), or other related areas Understanding of Cryptocurrency Wallet Infrastructure : An understanding of cryptocurrency wallet infrastructure across various networks (such as Ethereum, Bitcoin, Solana, Ripple … Experienced in Web3 Development: We are interested in candidates with prior experience in the Web3 space. This could include projects involving meme coins, DeFi trading platforms, smart contracts, NFTs, wallets, decentralized applications (DApps), or other related areas Understanding of Cryptocurrency Wallet Infrastructure : An understanding of cryptocurrency wallet infrastructure across various networks (such as Ethereum, Bitcoin, Solana, Ripple More ❯

technology, transforming physical properties into digital tokens representing ownership stakes. This approach lowers the entry threshold for investors and enhances transparency, security, and efficiency by leveraging smart contracts and decentralized finance (DeFi) mechanisms. At MetaWealth, we are passionate about empowering retail investors to take control of their financial futures. We believe that everyone should have access to More ❯

through back-end services and front-end websites and developing client applications; all of these will be communicating across the internet. What you'll do Writing smart contracts, also known as chain code, for Hyperledger Fabric Designing and developing applications using blockchain technology Testing and troubleshooting blockchain-driven projects Maintaining client and server-side applications Preparing documentation More ❯

build, and scale on the Sui blockchain. This team plays a critical role in enabling adoption by supporting integration with the Sui framework, designing and implementing smart contracts in the Move language, and building full-stack applications that serve as developer tools, internal products, or external-facing demos and PoCs. If you enjoy solving real-world problems … play a key role in expanding the adoption of Sui & Move technologies among developers and partner companies all over the world. You'll design and develop Smart Contracts, create innovative Solutions and empower other software engineers by building tools, creating technical resources, and showcasing the innovative capabilities of the Sui ecosystem. This role requires a proactive, developer … Responsibilities: Build and maintain full-stack applications using Next.js, React, TypeScript, and Node.js with SQL and Key-Value storage technologies for data management. Design and implement smart contracts using the Move programming language to support real-world use cases and learning scenarios Create high-quality technical demos, internal tools, and reference applications that illustrate how to build More ❯

Openings We are currently hiring for two Web3 developer positions: Frontend Developer - to help update and improve our React application. Smart Contract Developer - to build and integrate contracts using Solidity, ethers.js, wagmi, etc. We aim to hire both roles by next month. Hiring Process Since we're a small, fast-moving startup, the hiring process is informal More ❯

years of software engineering experience in backend teams primarily using Rust and Node/Node.js, TS & JS in a full stack environment Fluency in Solana Rust smart contracts with proven experience and projects 4+ years of experience in blockchain development. Practical experience deploying smart contracts on the mainnets of major blockchains Contribution to crypto More ❯

years of software engineering experience in backend teams primarily using Rust and Node/Node.js, TS & JS in a full stack environment Fluency in Solana Rust smart contracts with proven experience and projects 4+ years of experience in blockchain development. Practical experience deploying smart contracts on the mainnets of major blockchains Contribution to crypto More ❯

programmatic statistical analysis and quantitative/analytic skills High-level understanding of high-frequency market making strategies Understanding of blockchain fundamentals and mechanics of the EVM Familiarity with smart contract development and the Foundry toolkit A passion for learning about protocol microstructure and design mechanisms Note: For Singapore - we are able to sponsor an Employment Pass for exceptional More ❯

dApps used in the community. What You'll Be Doing Architect, build, launch, and maintain dApps - from concept to community usage Develop on-chain logic in smart contracts, connecting them to web front-ends for crypto natives and novices Work with business leads to define product roadmaps, and help set the vision and strategy for the venture … Provide product feedback to the Somnia Blockchain development team Why You're Made For This We seek an experienced Web3 Engineer with expertise in EVM-based smart contracts using Solidity, Web3 JS/TS libraries for contract interactions, and experience with The Graph. Shipped multiple production-grade dApps built with Solidity Strong hands-on skills with the … complex problems and working across disciplines Passionate about the web3 community Optional Skills Additional helpful experience includes: Using The Graph protocol to create Subgraphs or designing smart contracts for optimal indexability Experience in DeFi protocols like UniswapV2/V3 or AAVE Familiarity with Solidity fuzz testing, Slither, Mithril Experience with Hardhat testing framework We welcome applicants who More ❯

the community. What You'll Be Doing Architect, build, launch, and maintain dApps - from concept to being used by the community. Build on-chain logic in smart contracts, and connect them to web front-ends used by crypto natives and novices. Work with business leads to define the product roadmap, help set the vision and strategy for … Blockchain team, providing product feedback to their developers. Why You're Made For This We are seeking an experienced Web3 Engineer with expertise in EVM-based smart contracts on Solidity, Web3 JS/TS libraries for contract interactions, and experience with The Graph. You should have strong hands-on skills with the blockchain development framework Foundry. You … passionate about the web3 community. Optional skills The following technical experience is helpful but not essential: Experience using The Graph protocol to create Subgraphs or designing smart contracts for optimal indexability. Experience in the DeFi ecosystem, particularly swapping protocols (e.g., Uniswap V2 or V3) and lending protocols (e.g., AAVE). Awareness of Solidity fuzz testing, Slither, and More ❯

and UX Research technical approaches and drive decisions on platform components Own the responsibility for analysis, design, and implementation Writing, testing, upgrading, auditing, and deploying Solana smart contracts and building the System design (oracles, services, etc) around them Collaborate with the rest of the engineering and product teams to prioritize, estimate cost, spec upcoming features, and productize … technical paper, litepaper, etc. Can operate with a high degree of autonomy and should be able to handle multiple tasks simultaneously. 2+ years of experience writing smart contracts in production. Rust/Anchor for on-chain programs Shipping software and pushing to production daily KNOWLEDGE, SKILLS, AND ABILITIES : Patters knowledge & integration Time & memory complexity optimization Knowledge of More ❯

systems . Hands-on technical background, with expertise in areas like protocol design , low-latency systems , or order books . Comprehensive understanding of blockchain technologies, including smart contracts and platforms like Ethereum or Solana . Familiarity with DeFi protocols such as decentralized exchanges, lending platforms, or other relevant ecosystems. Adept at balancing the technical details needed to More ❯

finance, gaming, NFTs, and other major verticals. Our team of experienced product managers, designers, and engineers work together to create innovative products and services that enable smart contracts to securely access off-chain data and systems. With a focus on user-centered design, we strive to create intuitive and seamless experiences for developers and end-users alike. More ❯