Senior Frontend Engineer (React + Web3) — Crypto Crash Game dApp (BSC)

About Zpoken We're building a real-time crypto "crash" betting game on BNB Smart Chain. The React front-end largely exists; we need an experienced engineer to fix and complete its Web3 layer, wire it to a new backend, and polish the real-time game experience. What you'll do - Fix and modernize our Web3 integration (migrate/repair ethers.js v6 usage — wallet connection, balances, transactions, contract reads are currently broken). - Complete wallet flows: connect MetaMask / WalletConnect / Coinbase, network detection & switching (target BNB Smart Chain), deposit & withdraw. - Build the real-time game UI: live rising-multiplier chart and round state driven by WebSocket / SSE events, manual & auto cash-out controls. - Wire the front-end to our new Node.js backend (REST endpoints + real-time feed), replacing the old removed backend calls. - Fix the staking & NFT pages (currently point at a discontinued test network and have missing contract configs) to work on the live network. - Ensure a responsive, polished UI across desktop and mobile. You're a great fit if you - Have shipped production React dApps with real wallet/transaction flows (not just demos). - Are comfortable debugging an existing codebase and modern ethers.js v6. - Have built real-time UIs (sockets) and care about clean, responsive UX. Process: Start with a short skills-evaluation task (a small, hands-on fix in our codebase), then a paid trial for shortlisted candidates before the main engagement. Please reply with 2–3 live dApps you've built (links), and your experience with ethers.js and WebSocket-based UIs.