1 to 25 of 48 ethers.js Jobs in the UK

Conduct and support security audits, addressing vulnerabilities and integrating best practices Collaborate closely with protocol engineers to support integrations across L1 and L2 chains Work with web3 libraries like ethers.js, viem, and web3.py for off-chain contract interactions Occasionally contribute to related tooling and scripting in Python and TypeScript Who You Are Strong understanding of Ethereum L1/L2 architecture … with exposure to Yul, Vyper, or Huff (a plus) Solid grasp of DeFi concepts: DEXes, lending protocols, stablecoins, and staking mechanisms Proficient with Foundry, Hardhat, and comfortable working with ethers.js, web3.js, viem, or web3.py Strong security mindset, familiar with common attack vectors and the auditing process Practical coding experience in Python and JavaScript/TypeScript Nice to Have Experience in More ❯

development (including 2+ years on live smart contract deployments) - Deep understanding of EVM architecture, blockchain consensus, gas mechanics, and DeFi primitives. - Proficiency with Solidity and tools such as Hardhat, Ethers.js, Web3.js, or Foundry. - Experience integrating blockchain features into real-world financial or investment products. This is an exciting opportunity to work across smart contracts, protocol integrations, and backend engineering within More ❯

Our ideal candidate can see the bigger picture and architect both front end and back-end systems to accomplish product goals. Experience with smart contracts, ERC-20, web3 and ethers.js . While you'll primarily work with Node.JS/TypeScript, experience in DevOps is a plus. This role is fully remote (with offices optional and available!), though we would prefer More ❯

development, testing, and deployment. Smart Contract Upgrade Patterns: Familiarity with various smart contract upgradeability patterns Off-Chain Scripting/Interaction: Experience writing scripts (e.g., using Typescript/Javascript with Ethers.js/Web3.js, or GoLang) to interact with and manage smart contracts. CI/CD for Smart Contracts: Experience with continuous integration and continuous deployment pipelines for smart contracts. Understanding of More ❯

highly curious about DeFi and Crypto. App layer: React.js, Redux, ReduxSaga, Reselect, GraphQL, Node.js, TypeScript, AssemblyScript, MongoDB Web3: Solidity, OpenZeppelin, Chainlink oracles, Hardhat, Mocha, Chai, Tenderly, IPFS, The Graph, Ethers.js, Web3-onboard.js Infrastructure: AWS, CircleCI, Coveralls, Kibana, Grafana, Prometheus Areas you'll contribute to Writing and compiling Solidity Smart Contracts, including handling quirks and edge cases Deploying contracts on Ethereum … fetching data from Oracles and The Graph Ensuring blockchain and web-client integration Containerizing backend services At least 1 year of Solidity development experience, familiarity with Hardhat, Node.js, Typescript, Ethers.js, IPFS Understanding of The Graph, Oracles, and the broader web3 stack Knowledge of smart contract design patterns, standards (ERCs, EIPs), and best practices; understanding issues like reentrancy, migrations, upgradeability Over More ❯

development (including 2+ years on live smart contract deployments) Deep understanding of EVM architecture, blockchain consensus, gas mechanics, and DeFi primitives. Proficiency with Solidity and tools such as Hardhat, Ethers.js, Web3.js, or Foundry. Experience integrating blockchain features into real-world financial or investment products. This is an exciting opportunity to work across smart contracts, protocol integrations, and backend engineering within More ❯

development (including 2+ years on live smart contract deployments) Deep understanding of EVM architecture, blockchain consensus, gas mechanics, and DeFi primitives. Proficiency with Solidity and tools such as Hardhat, Ethers.js, Web3.js, or Foundry. Experience integrating blockchain features into real-world financial or investment products. This is an exciting opportunity to work across smart contracts, protocol integrations, and backend engineering within More ❯

development (including 2+ years on live smart contract deployments) Deep understanding of EVM architecture, blockchain consensus, gas mechanics, and DeFi primitives. Proficiency with Solidity and tools such as Hardhat, Ethers.js, Web3.js, or Foundry. Experience integrating blockchain features into real-world financial or investment products. This is an exciting opportunity to work across smart contracts, protocol integrations, and backend engineering within More ❯

development (including 2+ years on live smart contract deployments) Deep understanding of EVM architecture, blockchain consensus, gas mechanics, and DeFi primitives. Proficiency with Solidity and tools such as Hardhat, Ethers.js, Web3.js, or Foundry. Experience integrating blockchain features into real-world financial or investment products. This is an exciting opportunity to work across smart contracts, protocol integrations, and backend engineering within More ❯

development (including 2+ years on live smart contract deployments) Deep understanding of EVM architecture, blockchain consensus, gas mechanics, and DeFi primitives. Proficiency with Solidity and tools such as Hardhat, Ethers.js, Web3.js, or Foundry. Experience integrating blockchain features into real-world financial or investment products. This is an exciting opportunity to work across smart contracts, protocol integrations, and backend engineering within More ❯

development (including 2+ years on live smart contract deployments) Deep understanding of EVM architecture, blockchain consensus, gas mechanics, and DeFi primitives. Proficiency with Solidity and tools such as Hardhat, Ethers.js, Web3.js, or Foundry. Experience integrating blockchain features into real-world financial or investment products. This is an exciting opportunity to work across smart contracts, protocol integrations, and backend engineering within More ❯

development (including 2+ years on live smart contract deployments) Deep understanding of EVM architecture, blockchain consensus, gas mechanics, and DeFi primitives. Proficiency with Solidity and tools such as Hardhat, Ethers.js, Web3.js, or Foundry. Experience integrating blockchain features into real-world financial or investment products. This is an exciting opportunity to work across smart contracts, protocol integrations, and backend engineering within More ❯

development (including 2+ years on live smart contract deployments) Deep understanding of EVM architecture, blockchain consensus, gas mechanics, and DeFi primitives. Proficiency with Solidity and tools such as Hardhat, Ethers.js, Web3.js, or Foundry. Experience integrating blockchain features into real-world financial or investment products. This is an exciting opportunity to work across smart contracts, protocol integrations, and backend engineering within More ❯

development (including 2+ years on live smart contract deployments) Deep understanding of EVM architecture, blockchain consensus, gas mechanics, and DeFi primitives. Proficiency with Solidity and tools such as Hardhat, Ethers.js, Web3.js, or Foundry. Experience integrating blockchain features into real-world financial or investment products. This is an exciting opportunity to work across smart contracts, protocol integrations, and backend engineering within More ❯

development (including 2+ years on live smart contract deployments) Deep understanding of EVM architecture, blockchain consensus, gas mechanics, and DeFi primitives. Proficiency with Solidity and tools such as Hardhat, Ethers.js, Web3.js, or Foundry. Experience integrating blockchain features into real-world financial or investment products. This is an exciting opportunity to work across smart contracts, protocol integrations, and backend engineering within More ❯

development (including 2+ years on live smart contract deployments) Deep understanding of EVM architecture, blockchain consensus, gas mechanics, and DeFi primitives. Proficiency with Solidity and tools such as Hardhat, Ethers.js, Web3.js, or Foundry. Experience integrating blockchain features into real-world financial or investment products. This is an exciting opportunity to work across smart contracts, protocol integrations, and backend engineering within More ❯

development (including 2+ years on live smart contract deployments) Deep understanding of EVM architecture, blockchain consensus, gas mechanics, and DeFi primitives. Proficiency with Solidity and tools such as Hardhat, Ethers.js, Web3.js, or Foundry. Experience integrating blockchain features into real-world financial or investment products. This is an exciting opportunity to work across smart contracts, protocol integrations, and backend engineering within More ❯

EVM) or Rust (SVM). Familiarity with Ethereum, Solana, or similar blockchain ecosystems, and tools like Hardhat, Foundry, Anchor, etc. Experience working with Web3 libraries and tools such as ethers.js, web3.js, or wagmi. A strong sense of ownership and the ability to drive projects independently. Ability to navigate ambiguity and work effectively in a fast-changing environment. Commitment to code More ❯

EVM) or Rust (SVM). Familiarity with Ethereum, Solana, or similar blockchain ecosystems, and tools like Hardhat, Foundry, Anchor, etc. Experience working with Web3 libraries and tools such as ethers.js, web3.js, or wagmi. A strong sense of ownership and the ability to drive projects independently. Ability to navigate ambiguity and work effectively in a fast-changing environment. Commitment to code More ❯

Minimum 3 years of DeFi development experience working 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 More ❯

the ability to work quickly, efficiently, and to multitask Desire and ability to innovate and improve upon current processes Positive attitude and a team player Experience with web3.js or ethers.js, and developing DeFi applications and/or FinTech applications is a plus More ❯

systems (architecture, design patterns, reliability, and scaling) Problem-solving mindset, able to tackle challenges and optimize solutions in a fast-paced environment Nice-to-Haves Experience with web3 libraries (ethers.js, go-ethereum, etc.) Familiarity with Hexagonal Architecture Experience within a trading environment Must be a UK Citizen Company Culture and Values Ambition: We aim to conquer an impactful place in More ❯

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 More ❯

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 More ❯

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 More ❯