Esports Site Penetration Test Audit

My esports tournament platform needs a thorough penetration test completed within four days. The stack combines a Supabase/PostgreSQL back end, REST/GraphQL-based APIs, user accounts, an admin console, and a wallet that handles deposits, withdrawals, and payment-gateway traffic... (Budget: $10 - $30 USD, Jobs: API Testing, Internet Security, Penetration Testing, PHP, PostgreSQL, REST API, Testing / QA, Web Security)