Frontend Developer (Web3 / dApp)

Frontend Developer for Web3/dApp at Lagrange Labs, remote, $4,500-$6,500/month. Responsibilities: dApp UI, blockchain integration, UX for wallets.

Development of client-side of decentralized applications (dApps) and interfaces for ZK-coprocessors. Integration of frontend with blockchain networks (Ethereum, L2, Modular stacks) using Viem, Wagmi or Ethers.js. Implementation of convenient UX for interaction with wallets (Metamask, WalletConnect, Coinbase Wallet). Managing complex asynchronous transaction states and synchronization with blockchain in real time. Creating high-performance adaptive interfaces on React/Next.js. Optimizing frontend security to prevent Web3-specific attacks (address poisoning, phishing).

Commercial frontend development experience from 3 years. Deep knowledge of React and TypeScript (strict typing required). Practical experience with Web3 interfaces: transaction signing, reading smart-contract data, working with ABI. Understanding of EVM principles and transaction lifecycle in blockchain. Ability to work with Tailwind CSS or Styled Components for modern UI. Knowledge of testing tools (Jest, Cypress or Playwright). English level Intermediate+ (ability to participate in technical calls).\nNice to have:\n• Experience with WebAssembly (WASM) for cryptographic computations on client side.\n• Understanding of ZK-proofs concepts and how they are reflected in interfaces.

Remote, full-time, distributed international team. Salary range: 4,500–6,500 USD.