Full-Stack Crypto App Testnet Launch

I have a working codebase that spans Python APIs and database layers, a TypeScript/React front-end, and a set of blockchain smart contracts. Before we push anything to a public testnet I want a thorough, end-to-end review... (Budget: ₹37500 - ₹75000 INR, Jobs: API Development, Blockchain, Cryptocurrency, JavaScript, Python, Smart Contracts, Solidity, Typescript)