I have an existing Web3-based crowdfunding platform built with React (Vite), Node.js, MongoDB, and Ethereum smart contracts. The platform is already implemented and functional, but it contains specific technical bugs that must be fixed to make the system stable and production-ready.
- Important: This is a bug-fixing and stabilization project only. No new features, no refactoring, and no redesign are requested. The selected freelancer will work strictly within the existing architecture and codebase.
- Exact Bugs to Fix (3 Only)
1. MetaMask Connection State Bug Wallet connects successfully, but after page refresh or route change the frontend loses the wallet state while MetaMask remains connected, causing inconsistent UI behavior.
2. Transaction Feedback Bug ETH transactions are sent to the blockchain, but the frontend does not reliably display success or failure status, leaving the UI stuck in a loading state.
3. Smart Contract Revert Handling Bug When a contract call fails (revert, gas issue, or invalid input), the error is not properly captured or surfaced to the user, making debugging and user recovery impossible.
- Objectives
Fix the above bugs without changing system design Ensure consistent wallet and transaction state handling Improve reliability of Web3 interaction feedback Maintain clean, minimal, and maintainable fixes - Deliverables Fully fixed bugs listed above Verified working flows (wallet → transaction → UI update) Short technical summary explaining: Root cause of each bug How it was fixed - Freelancer Requirements Strong experience with React debugging Hands-on knowledge of Ethereum & MetaMask behavior Ability to debug Ethers.js / smart contract interactions Comfortable working with an existing codebase Clean fixes — no hacks, no unnecessary changes - Budget & Timeline Fixed-price or hourly (to be discussed) Milestone-based payment Fast turnaround preferred
