Web3 Crowdfunding Platform

Project Description

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