Experienced Full-Stack Developer Needed

I’m an independent developer building a personal web3 project and need an experienced full-stack engineer to help me build specific modules. This is not an agency or company project — I’m the sole owner and decision-maker.

What You’ll Build:

React Frontend Module
Connect wallet (MetaMask/WalletConnect)
Display token balances + switch chains (Ethereum, Polygon)
Simple UI for token swap simulation (no real funds — mock data only)
Smart Contract Module (Solidity + Rust)
Write a basic AMM-style swap contract (Solidity)
Write a simple cross-chain message handler (Rust — Polkadot/Substrate)
Add unit tests using Hardhat

Backend API Module (Node.js)
Build REST endpoint to fetch mock user transaction history
Store mock data in JSON (no database needed)

Tech Stack:
Frontend: React, Next.js, TypeScript, Tailwind
Blockchain: Web3.js, Ethers.js, Polkadot.js
Smart Contracts: Solidity, Rust (Substrate)
Backend: Node.js, Express
Testing: Hardhat, Jest

Must-Have Skills:
Built at least 1 live React + blockchain project (share GitHub or demo link)
Experience with Solidity + EVM chains (Ethereum/Polygon)
Experience with Rust + Polkadot/Substrate (must show proof)
Can write clean, tested, documented code

Nice-to-Have:
Experience with Jotai, Golang, or IPFS
UI/UX sense for web3 apps

Timeline:
Duration: 4–6 weeks (part-time, ~20 hrs/week)
Flexible hours — async communication preferred
Timezone: Any — but must respond within 24 hrs

Do NOT Apply If:
You’ve never shipped a live React + blockchain project
You don’t have Rust + Polkadot experience
You need constant supervision
You can’t deliver clean, tested code