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
Innovative Jenga-Based Mobile Game Development Category: Animation, C#, Programming, Game Design, Game Development, IPhone, Mobile App Development, Unity, User Interface / IA Budget: $250 - $750 USD
01-Feb-2026 11:04 GMT
Health & Beauty Promo Articles Category: Article Rewriting, Article Writing, Blog Writing, Content Writing, Copywriting, Ghostwriting, Research, SEO Writing Budget: €8 - €30 EUR
01-Feb-2026 11:03 GMT
Arabic Travel Collage Promo Video Category: Animation, Motion Graphics, Typography, Video Editing, Video Production, Video Services Budget: $30 - $250 USD
ai animation help Category: AI Animation, Video Upload Budget: $10 - $30 AUD
01-Feb-2026 11:01 GMT
Car Lamp Aesthetic Modification Category: 3D Animation, 3D CAD, 3D Design, 3D Graphic Design, 3D Modelling, 3D Rendering, 3D Visualization, Solidworks Budget: €1500 - €3000 EUR
01-Feb-2026 11:01 GMT
Foreign Affairs Security Advisory Role Category: Business Analysis, Business Writing, Data Analysis, Management, Report Writing, Research And Development, Research Writing, Risk Assessment, Strategic Planning, Technical Writing Budget: $750 - $1500 USD
Experienced Full-Stack Developer for Travel-Tech Web Platform Category: AngularJS, API Development, Full Stack Development, JavaScript, Next.js, Node.js, React.js, RESTful, Retrieval Augmented Generation (RAG), Web Development Budget: $10000 - $20000 USD
01-Feb-2026 11:00 GMT
OpenWrt Switch OS Development on Realtek Category: C, Programming, Cisco, Embedded Systems, Linux, Network Administration, Network Engineering, Network Security, Security Budget: ₹37500 - ₹75000 INR
