Smart Contract & Wallet Integration (Web3/Ethers.js)

We're looking for a Web3 developer to complete a project that involves integrating existing smart contracts into our frontend application using ethers.js. You will be responsible for connecting wallet functionality (MetaMask), handling token transfers, and supporting multiple networks (Ethereum, BSC, Polygon).

- Project Deliverables:

Integrate wallet connection UI and backend logic (e.g., MetaMask).
Implement token transfer functions and transaction feedback (e.g., loading, confirmation, error states).
Optimize blockchain interaction for gas efficiency and reliability.
Support integration across at least 2 networks (Ethereum + BSC or Polygon).
Provide documentation or code walkthrough for future maintenance.

- Skills Required:

Web3.js or Ethers.js
Smart contract interaction
Frontend integration (React preferred)
Multi-chain support and troubleshooting

- Note: This is a freelance project with potential for follow-up tasks.