1 to 25 of 43 Smart Contracts Jobs in London

the team, you'll take on complex technical challenges across the entire stack-from crafting performant user interfaces to architecting backend services, as well as writing smart contracts that power next-generation financial products. You'll work closely with product managers, designers, and fellow engineers to build intuitive, secure, and performant Web3 experiences. WHAT YOU WILL DO … Design, develop, and maintain full-stack Web3 applications-ranging from user interfaces and APIs to smart contracts and blockchain integrations. Implement smart contracts using languages such as Solidity (EVM) or Rust (SVM), and ensure they are secure, tested, and optimized for performance. Collaborate cross-functionally with engineers, designers, and product stakeholders to define, prototype … of frontend technologies, including React and modern JavaScript/TypeScript tooling. Deep knowledge of backend development, including RESTful APIs, databases, and secure infrastructure practices. Hands-on experience with smart contract development in Solidity (EVM) or Rust (SVM). Familiarity with Ethereum, Solana, or similar blockchain ecosystems, and tools like Hardhat, Foundry, Anchor, etc. Experience working with Web3 libraries More ❯

Director of Product Design at Bitcoin Smart Contracts Blockchain This EVM Blockchain platform is at the forefront of transforming the financial industry with its cutting-edge technology and is seeking a passionate Director of Product Design to shape the design strategy and team for this world-changing business. The Company Leading player in the world of Ethereum … Virtual Machine (EVM) Smart Contracts Extensive company funding allows for truly ground-breaking experimentation A diverse, international team working from anywhere in the world Extensive benefits, bonuses and share options The Role Completely own the design practice - build the strategy and build the team as you see fit Massive opportunity to design a blockchain ecosystem As well More ❯

dApps used by 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 and connect them to web front-ends for crypto users and newcomers. Work with business leads to define product roadmaps, set vision and strategy, and serve as a sounding … Blockchain team and provide product feedback to their developers. 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. You have shipped multiple production-grade Dapps using Solidity. You possess strong hands-on … problems and working across disciplines. You are passionate about the web3 community. Optional Skills Additional helpful experience includes: Creating Subgraphs with The Graph protocol or designing smart contracts for optimal indexability. Experience in DeFi protocols like UniswapV2/V3 or AAVE. Familiarity with Solidity fuzz testing, Slither, or Mithril. Using the Hardhat testing framework. If you believe 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 to be used by crypto natives and novices Work with business leads to define the product roadmap, help set the vision and … team and provide product feedback to their developers Why You're Made For This We are seeking an experienced Web3 Engineer with experience on EVM-based smart contracts in Solidity, Web3 JS/TS libraries for contract interactions with frontend and backend systems, and experience with The Graph. You have strong hands-on skills with the blockchain … working across disciplines to find the best solutions. You are passionate about the web3 community. Optional Skills Experience with The Graph protocol for creating Subgraphs, designing smart contracts for optimal indexability, DeFi protocols like Uniswap and AAVE, Solidity fuzz testing, Slither, Mithril, and Hardhat testing framework are helpful but not essential. We welcome applications from candidates with 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 ❯

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 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 ❯

Senior Smart Contract Engineer London Engineering In office Full-time Summary Perpl is a high-performance, orderbook-based perpetuals DEX launching on Monad. We're backed by top crypto-native investors and building the next evolution of on-chain trading-one that combines CEX-level performance with DeFi composability and transparency. Our mission is to bring the speed … you'll play a critical role in building the infrastructure powering on-chain derivatives at scale. In this role, you will: Design and implement mission-critical smart contracts for the Perpl CLOB and vault system Collaborate closely with engineering, product, and quant teams to ensure robustness and capital efficiency Define testing, simulation, and on-chain monitoring standards … optimization Own the full lifecycle of smart contract development from design audit deployment upgrade Qualifications Required 3+ years of experience building and maintaining EVM smart contracts in production Strong knowledge of Solidity, low-level EVM mechanics, and gas optimization strategies Proven ability to work with external auditors and internal security reviews Experience designing DeFi protocols More ❯

prototype frontend using React/Next.js. Integrate Web3 libraries such as Ether.js, Web3.js, and Wagmi. Design and build robust backend systems using Rust, Go, or Node.js. Collaborate with smart contract engineers and contribute to Solidity (EVM) and Rust (Solana) smart contract development. Work closely with the UX design team to bring intuitive interfaces to life. Deploy … or Node.js. Frontend proficiency in React and Next.js. Solid experience with Web3 development libraries: Ether.js, Web3.js, Wagmi, etc. Hands-on experience deploying and interacting with Solidity smart contracts (EVM-based). Familiarity with Rust smart contracts for Solana is a big plus. Proven experience with AWS infrastructure (must-have). Experience with AWS CDK 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 ❯

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 ❯

implement RWA tokenization strategies on Solana and adjacent ecosystems. While you'll work within a Solana-first environment, most of your contributions will be in architectural design, APIs, smart contract integrations, data pipelines, and compliance flows rather than low-level Rust development (though familiarity is a plus). What you'll do: Design tokenization architectures for … RWAs on Solana as well as custody, compliance, and lifecycle flows Interface with enterprise clients and partners to understand technical requirements Develop integration blueprints across APIs, smart contracts (Solana + SPL), oracles, and custodians Collaborate with protocol developers, external front-end and back-end teams to deliver E2E solutions Contribute to reference architectures and internal best practices … You might be a fit if you have: 8+ years in a technical architecture or solution engineering role Hands-on experience with Web3 tools: wallets, APIs, smart contracts (ideally Solana) Solid understanding of asset tokenization (e.g. securities, funds, carbon, real estate) Familiarity with Solana architecture (SPL tokens, PDAs, anchor framework, etc.) Prior exposure to regulated financial institutions More ❯

and implement RWA tokenization strategies on Solana and adjacent ecosystems. While youll work within a Solana-first environment, most of your contributions will be in architectural design, APIs, smart contract integrations, data pipelines, and compliance flows rather than low-level Rust development (though familiarity is a plus). What you'll do: Design tokenization architectures for … RWAs on Solana as well as custody, compliance, and lifecycle flows Interface with enterprise clients and partners to understand technical requirements Develop integration blueprints across APIs, smart contracts (Solana + SPL), oracles, and custodians Collaborate with protocol developers, external front-end and back-end teams to deliver E2E solutions Contribute to reference architectures and internal best practices … You might be a fit if you have: 8+ years in a technical architecture or solution engineering role Hands-on experience with Web3 tools: wallets, APIs, smart contracts (ideally Solana) Solid understanding of asset tokenization (e.g. securities, funds, carbon, real estate) Familiarity with Solana architecture (SPL tokens, PDAs, anchor framework, etc.) Prior exposure to regulated financial institutions More ❯

users to combine, automate, and execute any DeFi action with zero code. We're a small, passionate team with a deep belief in permissionless innovation, user ownership, and smart contract modularity.We're now looking for a Frontend Engineer (Mid-Senior Level) to help … us build the next generation of Web3 interfaces. What You'll Do Own and contribute to the development of dynamic, responsive, and performant Web3 applications. Integrate smart contracts into the frontend with libraries such asethers.js,viem, orwagmi. Work closely with design and product teams to bring complex DeFi workflows to life through intuitive UI/UX. Build … JS/TS frameworks. Proven experience working in the Web3 space , especially with DeFi protocols (e.g. Uniswap, Aave, Curve, etc.). Comfortable calling and interacting with smart contracts from the frontend. Experience using tools for indexing and querying on-chain data (e.g. The Graph, Moralis, SubQuery, custom solutions). Deep understanding of Web3 libraries like wagmi , viem 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 future. We believe that everyone should have access to … a strong interest in Web3 technologies to join our team. In this role, you'll build responsive, high-performance user interfaces that interact with Solana-based smart contracts and decentralized applications (dApps). You'll work closely with our product, design, and blockchain teams to deliver seamless user experiences in a fast-moving and innovative environment. If … love to meet you. Requirements Min. 5 years experience on web2 frontend development + min. 1 years experience on Web3 Frontend Development on Solana ecosystem (Wallet Connections ,Solana Smart Contract integrations to the frontend) Understanding of how Solana and blockchain work in high level is essential like RPC Nodes, Wallet Providers, transaction signing from frontend using wallet providers More ❯

reliable, and secure systems in a fast-paced environment. Nice to Have Previous experience in crypto trading infrastructure or traditional financial markets. Knowledge of blockchain protocols, smart contracts, and decentralized finance (DeFi). Experience working in high-frequency trading (HFT) or algorithmic trading environments. We would like the successful candidate to be based in the UK or More ❯

and similarity queries Familiarity with crypto markets, order books, and risk-management frameworks Familiarity with anomalydetection methods for streaming text and timeseries data Experience developing EVM smart contracts with Solidity and modern toolchains (Foundry or Hardhat). Experience with realtime subscription frameworks (GraphQL subscriptions, WebSockets) or gRPC streaming for live data updates Seniority level Seniority level Mid More ❯

with EVM, Solana, and other blockchain ecosystems. Minimum 3 years experience using JavaScript/TypeScript, NodeJS, and relevant SDKs (e.g. web3.js , ethers.js ). Deep understanding of Smart Contracts, AMM, Farming, etc. Experience with websocket programming. Experience with Linux system programming. Good to have: Trading system experience in connectivity, model pricing. Good to have: Experience with C++ and 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 ❯

key engineering units within the Tezos ecosystem. Directly overseeing an engineering function of around 30 including managers and engineers (plus numerous external vendors) developing tooling, infrastructure, smart contracts and decentralised applications. As part of the leadership team you'll work closely with the Co-Founder of Tezos and have the opportunity to shape the technical roadmap, drive More ❯

key engineering units within the Tezos ecosystem. Directly overseeing an engineering function of around 30 including managers and engineers (plus numerous external vendors) developing tooling, infrastructure, smart contracts and decentralised applications. As part of the leadership team, you'll work closely with the Co-Founder of Tezos and have the opportunity to shape the technical roadmap, drive More ❯

Depends on experience Equity: Generous equity package, on a standard vesting schedule Impact & Exposure: Work at the leading edge of innovation building our machine-learning powered smart contracts for fraud prevention Growth: An opportunity to wear many hats, and grow into a role you can inform Hybrid work: Work from office 3 days a week, remote work More ❯

key engineering units within the Tezos ecosystem. Directly overseeing an engineering function of around 30 including managers and engineers (plus numerous external vendors) developing tooling, infrastructure, smart contracts and decentralised applications. As part of the leadership team you'll work closely with the Co-Founder of Tezos and have the opportunity to shape the technical roadmap, drive More ❯

designing and implementing secure, scalable blockchain applications that integrate with our AI platform. Responsibilities Design and develop blockchain solutions for financial applications Lead the implementation of smart contracts and decentralized applications Ensure security and efficiency of blockchain implementations Collaborate with AI teams to integrate blockchain with AI solutions Mentor junior developers and provide technical leadership Research and More ❯