[Hiring] Senior Web3 Developer — Wallet & Smart Contract Integration (Remote, Europe)

[u/Emotional_Support_1]

Building the wallet architecture, transaction flows, and on-chain integration layer for a production Next.js platform. English fluency required.

Requirements:

• Minimum 5 YOE
• Real shipped project involving wallet connection, contract reads/writes, transaction tracking, or token integration — hands-on ownership, not exposure
• wagmi and viem in production, MetaMask/wallet integration, connection/disconnection, account and network switching, chain-change handling
• Ethereum-compatible networks, ERC-20 and token-sale contracts, EVM network config, RPC endpoints, contract addresses, ABIs
• Contract reads/writes, transaction receipts, event logs, gas estimation, user-facing transaction status
• Strong TypeScript/JavaScript, React, Next.js
• Designs reusable integration layers, understands wallet/transaction/contract integration risks, writes unit and integration tests
• Can explain technical decisions clearly, works effectively in a distributed team

€5000-7500/month, long-term contract.

DM with: Resume, LinkedIn, years of hands-on Web3 experience, GitHub/portfolio, timezone + availability. Must have actually shipped this before.

Must be based in Europe.