Vacancy: Frontend Developer (Web3 / dApp) Company: Lagrange Labs Salary Range: 4,500 - 6,500 USD Conditions: remote, full-time, work in a distributed international team

Responsibilities: — Development of the client-side of decentralized applications (dApps) and interfaces for ZK-coprocessors. — Integration of the frontend with blockchain networks (Ethereum, L2, Modular stacks) using Viem, Wagmi, or Ethers.js. — Implementation of a user-friendly UX for interacting with wallets (Metamask, WalletConnect, Coinbase Wallet). — Management of complex asynchronous transaction states and real-time data synchronization with the blockchain. — Creation of high-performance and adaptive interfaces on React/Next.js. — Optimization of frontend security to prevent Web3-specific attacks (address poisoning, phishing).

Requirements: — Commercial Frontend development experience of 3+ years. — Deep knowledge of React and TypeScript (strict typing is mandatory). — Practical experience in developing Web3 interfaces: signing transactions, reading data from smart contracts, working with ABI. — Understanding of EVM principles and blockchain transaction lifecycle. — Ability to work with Tailwind CSS or Styled Components to create modern UIs. — Knowledge of testing tools (Jest, Cypress, or Playwright). — English at Intermediate+ level (ability to participate in technical calls).

Will be a plus: — Experience with WebAssembly (WASM) for performing client-side cryptographic computations. — Understanding of ZK-proofs concepts and how they are reflected in interfaces.

Contacts: Gorskines