Urgent Security Audit: 2-Hour Next.js / PostgreSQL Repository Review

We need a Senior Fullstack Security Engineer to perform an immediate, cold code audit on a private ZIP repository for a Proptech platform (Next.js 15 monolithic architecture, PostgreSQL database, and Stripe Sandbox Integration)... (Budget: €8 - €30 EUR, Jobs: Full Stack Development, Next.js, Penetration Testing, PostgreSQL, Security Auditing, Software Testing, Stripe, Technical Documentation, Web Security)