Ethereum Credit Card Contract Audit

I have a Solidity smart contract on Ethereum that powers a crypto-backed card with a built-in credit line. Before we move to main-net launch, I need a seasoned auditor to examine every line for potential exploits and logical flaws, then suggest clear, actionable fixes... (Budget: $1500 - $3000 USD, Jobs: Blockchain, Ethereum, Legal, Report Writing, Smart Contracts, Software Testing, Solidity, Testing / QA)