18 of 18 Permanent Smart Contracts Jobs in London

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 ❯

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 ❯

will be critical in developing robust, systematic, and scalable solutions that drive our core operations. This is a unique opportunity for a candidate with a strong blend of smart contract expertise and traditional software engineering skills to build the next generation of DeFi infrastructure. Key Responsibilities: * Systematically integrate with various DeFi protocols (e.g., DEXs, lending markets, yield … farms) across multiple blockchain networks. * Design, develop, and maintain automated systems for on-chain operations, including trading, liquidity management, and asset custody. * Write, test, and deploy smart contracts; proficiency beyond Solidity is highly valued. * Develop and maintain off-chain automation bots, data pipelines, and monitoring tools using languages like Python or Java. * Collaborate with the quant and … similar role within the DeFi space, ideally from: * DeFi Funds or Algorithmic Trading Firms * Leading DeFi Protocols * DeFi Custody or Infrastructure Providers Required Skills & Qualifications: * Strong experience in smart contract development with Solidity. Proficiency in other smart contract languages (e.g., Rust for Solana, Vyper) is a significant plus. * Solid foundation in general-purpose programming languages such More ❯

will be critical in developing robust, systematic, and scalable solutions that drive our core operations. This is a unique opportunity for a candidate with a strong blend of smart contract expertise and traditional software engineering skills to build the next generation of DeFi infrastructure. Key Responsibilities: * Systematically integrate with various DeFi protocols (e.g., DEXs, lending markets, yield … farms) across multiple blockchain networks. * Design, develop, and maintain automated systems for on-chain operations, including trading, liquidity management, and asset custody. * Write, test, and deploy smart contracts; proficiency beyond Solidity is highly valued. * Develop and maintain off-chain automation bots, data pipelines, and monitoring tools using languages like Python or Java. * Collaborate with the quant and … similar role within the DeFi space, ideally from: * DeFi Funds or Algorithmic Trading Firms * Leading DeFi Protocols * DeFi Custody or Infrastructure Providers Required Skills & Qualifications: * Strong experience in smart contract development with Solidity. Proficiency in other smart contract languages (e.g., Rust for Solana, Vyper) is a significant plus. * Solid foundation in general-purpose programming languages such More ❯

will be critical in developing robust, systematic, and scalable solutions that drive our core operations. This is a unique opportunity for a candidate with a strong blend of smart contract expertise and traditional software engineering skills to build the next generation of DeFi infrastructure. Key Responsibilities: * Systematically integrate with various DeFi protocols (e.g., DEXs, lending markets, yield … farms) across multiple blockchain networks. * Design, develop, and maintain automated systems for on-chain operations, including trading, liquidity management, and asset custody. * Write, test, and deploy smart contracts; proficiency beyond Solidity is highly valued. * Develop and maintain off-chain automation bots, data pipelines, and monitoring tools using languages like Python or Java. * Collaborate with the quant and … similar role within the DeFi space, ideally from: * DeFi Funds or Algorithmic Trading Firms * Leading DeFi Protocols * DeFi Custody or Infrastructure Providers Required Skills & Qualifications: * Strong experience in smart contract development with Solidity. Proficiency in other smart contract languages (e.g., Rust for Solana, Vyper) is a significant plus. * Solid foundation in general-purpose programming languages such More ❯

will be critical in developing robust, systematic, and scalable solutions that drive our core operations. This is a unique opportunity for a candidate with a strong blend of smart contract expertise and traditional software engineering skills to build the next generation of DeFi infrastructure. Key Responsibilities: * Systematically integrate with various DeFi protocols (e.g., DEXs, lending markets, yield … farms) across multiple blockchain networks. * Design, develop, and maintain automated systems for on-chain operations, including trading, liquidity management, and asset custody. * Write, test, and deploy smart contracts; proficiency beyond Solidity is highly valued. * Develop and maintain off-chain automation bots, data pipelines, and monitoring tools using languages like Python or Java. * Collaborate with the quant and … similar role within the DeFi space, ideally from: * DeFi Funds or Algorithmic Trading Firms * Leading DeFi Protocols * DeFi Custody or Infrastructure Providers Required Skills & Qualifications: * Strong experience in smart contract development with Solidity. Proficiency in other smart contract languages (e.g., Rust for Solana, Vyper) is a significant plus. * Solid foundation in general-purpose programming languages such More ❯

various blockchain platforms, smart contract development, and integrating blockchain with enterprise systems. Responsibilities Design and implement blockchain architectures and decentralized applications (DApps). Develop smart contracts using platforms like Ethereum, Hyperledger Fabric, Corda, or Polygon. Define consensus algorithms and token economics. Set up blockchain infrastructure including nodes and networks. Ensure security through cryptographic techniques and … least 4-5 years in blockchain solution design, architecture, and implementation. Expertise in blockchain platforms such as Ethereum, Hyperledger Fabric, Corda, or Polygon, with hands-on experience in smart contract development. Strong proficiency in programming languages (Solidity, Go, Java, Python, or Rust) for blockchain application development. Proven ability to design decentralized applications (DApps), consensus algorithms, and token economics More ❯

various blockchain platforms, smart contract development, and integrating blockchain with enterprise systems. Responsibilities Design and implement blockchain architectures and decentralized applications (DApps). Develop smart contracts using platforms like Ethereum, Hyperledger Fabric, Corda, or Polygon. Define consensus algorithms and token economics. Set up blockchain infrastructure including nodes and networks. Ensure security through cryptographic techniques and … least 4-5 years in blockchain solution design, architecture, and implementation. Expertise in blockchain platforms such as Ethereum, Hyperledger Fabric, Corda, or Polygon, with hands-on experience in smart contract development. Strong proficiency in programming languages (Solidity, Go, Java, Python, or Rust) for blockchain application development. Proven ability to design decentralized applications (DApps), consensus algorithms, and token economics More ❯

various blockchain platforms, smart contract development, and integrating blockchain with enterprise systems. Responsibilities Design and implement blockchain architectures and decentralized applications (DApps). Develop smart contracts using platforms like Ethereum, Hyperledger Fabric, Corda, or Polygon. Define consensus algorithms and token economics. Set up blockchain infrastructure including nodes and networks. Ensure security through cryptographic techniques and … least 4-5 years in blockchain solution design, architecture, and implementation. Expertise in blockchain platforms such as Ethereum, Hyperledger Fabric, Corda, or Polygon, with hands-on experience in smart contract development. Strong proficiency in programming languages (Solidity, Go, Java, Python, or Rust) for blockchain application development. Proven ability to design decentralized applications (DApps), consensus algorithms, and token economics More ❯

various blockchain platforms, smart contract development, and integrating blockchain with enterprise systems. Responsibilities Design and implement blockchain architectures and decentralized applications (DApps). Develop smart contracts using platforms like Ethereum, Hyperledger Fabric, Corda, or Polygon. Define consensus algorithms and token economics. Set up blockchain infrastructure including nodes and networks. Ensure security through cryptographic techniques and … least 4-5 years in blockchain solution design, architecture, and implementation. Expertise in blockchain platforms such as Ethereum, Hyperledger Fabric, Corda, or Polygon, with hands-on experience in smart contract development. Strong proficiency in programming languages (Solidity, Go, Java, Python, or Rust) for blockchain application development. Proven ability to design decentralized applications (DApps), consensus algorithms, and token economics 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 ❯

Requirements 5+ years in Web3 with architectural experience; strong Solidity, Java, and EVM expertise; Rust/JS a plus. Deep Bitcoin knowledge, applied cryptography, secure protocol design, and smart contract auditing. Experience with consensus algorithms, Sybil control mechanisms, and blockchain interoperability. Strong problem-solving, analytical, communication, and remote teamwork skills; BSc/BA or equivalent; fluent English. Offers More ❯

complex datasets to identify patterns, anomalies, and insights Collaborate with developers and data scientists to validate results and refine algorithms Assist in developing blockchain use cases and understanding smart contract workflows Build dashboards, reports, or data visualisations to communicate findings to stakeholders Contribute to research into emerging technologies and their practical application in finance. Requirements Undergraduate degree in More ❯

3+ years of professional software engineering experience Strong proficiency in Rust (or another systems language with proven Rust competency through projects) Familiarity with DeFi protocols , smart contracts, or on-chain trading systems Ideally experience with a trading firm, exchange, platform where you have worked with building new connectors. Onsite in London (Paddington WeWork) . Competitive base salary More ❯

3+ years of professional software engineering experience Strong proficiency in Rust (or another systems language with proven Rust competency through projects) Familiarity with DeFi protocols , smart contracts, or on-chain trading systems Ideally experience with a trading firm, exchange, platform where you have worked with building new connectors. Onsite in London (Paddington WeWork) . Competitive base salary More ❯

3+ years of professional software engineering experience Strong proficiency in Rust (or another systems language with proven Rust competency through projects) Familiarity with DeFi protocols , smart contracts, or on-chain trading systems Ideally experience with a trading firm, exchange, platform where you have worked with building new connectors. Onsite in London (Paddington WeWork) . Competitive base salary More ❯

3+ years of professional software engineering experience Strong proficiency in Rust (or another systems language with proven Rust competency through projects) Familiarity with DeFi protocols , smart contracts, or on-chain trading systems Ideally experience with a trading firm, exchange, platform where you have worked with building new connectors. Onsite in London (Paddington WeWork) . Competitive base salary More ❯

groups, or organized crime networks leverage crypto for illicit finance-including relevant TTPs. Comfortable using raw blockchain data and native explorers to trace assets, including through smart contracts and across bridges. Demonstrated ability to lead complex investigations with minimal oversight-seeing them through from initial exploitation to actionable intelligence Bonus Points for: Experience working with or alongside More ❯