React Developer (Web3 / Interface)

React Developer (Web3/Interface) at Lagrange Labs, remote, full-time, $4,500-$6,500/month, developing frontend for ZK-proof ecosystem.

Development and evolution of the client side of the Lagrange ecosystem (dashboards, interfaces for interaction with ZK-coprocessors). Integration of applications with blockchain providers (Ethers.js, Viem, Wagmi) and support for various wallet types. Optimization of React component performance when working with large data arrays from blockchain in real time. Design and implementation of complex interactive charts and visualizations for monitoring ZK-proof status. Close collaboration with designers (Figma) and backend team to ensure perfect UX/UI. Covering code with Unit and Integration tests to ensure stability of financial interfaces.

Commercial experience with React from 3 years. Deep knowledge of JavaScript (ES6+) and mandatory proficiency in TypeScript. Experience with modern state managers (Zustand, Redux Toolkit or TanStack Query). Practical experience in Web3: understanding of transaction lifecycle, RPC nodes, and specifics of dApps. Ability to create responsive and accessible interfaces using Tailwind CSS or Styled Components. Knowledge of build tools (Vite, Webpack) and basics of CI/CD. English at the level of reading documentation and communication in Slack.

Remote, full-time, flexible start of day. Salary from 4,500 to 6,500 USD.