React + Supabase Developer for Social Platform

We run a live, production social/professional networking platform (React + Vite frontend, Supabase/Postgres backend, hosted on Vercel). Most core features are built and working. We need a developer to close out remaining production items ahead of a pilot launch. Scope of work - Payment/subscription integration (tiered plans, Stripe) - Convert an in-memory feature to persistent database storage - Finalize a request/accept-style relationship model that is already partially built - Complete pending database-level security test cases (Row-Level Security policies must be proven, not just applied) - QA pass with test accounts across multiple user roles - Support onboarding a real customer's data at launch Requirements: - Strong Postgres/Supabase experience, specifically Row-Level Security (RLS) policies enforced at the database layer, not just app-level checks - Experience with Stripe subscription integration - Comfortable working from detailed written session briefs, following a discovery → implement → verify workflow - Will be required to sign an NDA before receiving full technical specs, credentials, or codebase access