Senior Web3 Developer

Building the wallet architecture, transaction flows, and on-chain integration layer for a production Next.js platform. English fluency required. Requirements: Minimum 5 years of experience. Real shipped project involving wallet connection, contract reads/writes, transaction tracking, or token integration with hands-on ownership, not exposure. wagmi and viem in production, MetaMask/wallet integration, connection/disconnection, account and network switching, chain-change handling. Ethereum-compati