Developer to Finish and Secure Our AI-Built SaaS (Next.js, Supabase, Stripe)

We built an MVP using Claude Code. The core features work, but it needs a strong engineer to make it stable and ready for paying customers. Scope: - Review the codebase and send a short written audit of what is broken or risky - Fix authentication and Supabase row-level security so customers cannot see each other's data - Finish Stripe subscription billing and webhook handling - Fix the 3 known bugs we will share after hiring (dashboard loading, email notifications, user invites) - Add a simple read-only MCP server so our team can ask Claude questions about usage and billing data - Deploy to Vercel with clear handoff notes What we're looking for: - Experience finishing or rescuing AI-generated codebases - Strong with Next.js, TypeScript, Supabase and Stripe - Honest about what you find, even if it is messy To apply, tell us the first thing you would check in a codebase like this.