Web Developer jobs in France

AtEnso, we’re reimagining the future of DeFi by building powerful composability tools that unlock the true potential of on-chain protocols. Our platform empowers 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 aFrontend Engineer (Mid-Senior Level)to help us build the next generation of Web3 interfaces.

• Own and contribute to the development of dynamic, responsive, and performant Web3 applications.

• Integrate smart contracts into the frontend with libraries such as ethers.js, viem, or wagmi.

• Work closely with design and product teams to bring complex DeFi workflows to life through intuitive UI/UX.

• Build dashboards and interfaces that query and display on-chain data using indexing tools (e.g. The Graph, Subsquid, or custom indexers).

• Implement and maintain Web3 wallet connections (e.g. WalletConnect, MetaMask, Safe).

• Optimize performance, security, and usability for users interacting with DeFi protocols.

• Stay up to date with the evolving DeFi landscape and propose improvements or new ideas to enhance the product.

• 3+ years of experience in frontend development with strong knowledge ofReact,TypeScript, and modern JS/TS frameworks.

• Proven experience working in theWeb3 space, especially withDeFi protocols(e.g. Uniswap, Aave, Curve, etc.).

• Comfortable calling and interacting with smart contracts from the frontend.

• Experience using tools forindexing and querying on-chain data(e.g. The Graph, Moralis, SubQuery, custom solutions).

• Deep understanding of Web3 libraries likewagmi,viem,ethers.js, orweb3.js.

• Strong UX sensibilities and a passion for creating intuitive blockchain interfaces.

• Familiarity with state management (e.g. Zustand, Jotai, Redux) and component libraries (e.g. Tailwind, Radix, Chakra).

• Ability to work autonomously in a fast-paced, async-first remote team.

• Experience working in early-stage startups or with crypto-native teams.

• Contributions to open-source Web3/DeFi projects.

• Experience building complex on-chain workflows or automation tools.

• Familiarity with smart contract testing or writing Solidity code.

• Work on bleeding-edge DeFi infrastructure with a mission-driven team.

• Freedom to innovate — flat hierarchy and startup agility.

• Fully remote, flexible hours, async-first.

• Competitive compensation + token incentives.

• Ownership and visibility in shaping the next phase of DeFi UX.