React Developer (Web3 / Interface)

Remote | 4500 - 6500 USD

Company: Lagrange Labs Salary Range: from 4,500 to 6,500 USD Conditions: remote, full-time, flexible start of the day

Responsibilities: — Development and enhancement of the client-side of the Lagrange ecosystem (dashboards, interfaces for interacting with ZK coprocessors). — Integration of applications with blockchain providers (Ethers.js, Viem, Wagmi) and support for various types of wallets. — Optimization of React component performance when working with large volumes of real-time blockchain data. — Design and implementation of complex interactive charts and visualizations for monitoring the state of ZK proofs. — Close collaboration with designers (Figma) and the backend team to ensure perfect UX/UI. — Code coverage with Unit and Integration tests to ensure the stability of financial interfaces.

Requirements: — 3+ years of commercial development experience with React. — 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 transaction lifecycle, RPC node operations, and dApps specifics. — Ability to build responsive and accessible interfaces using Tailwind CSS or Styled Components. — Knowledge of build tools (Vite, Webpack) and CI/CD fundamentals. — English proficiency sufficient for reading documentation and communicating on Slack.

Contacts: Gorskines