Full-Stack Next.js / Supabase Developer – Custom Marketplace Backend Build

Full-Stack Developer: Marketplace Backend The Project Build the backend for a peer-to-peer automotive based marketplace. All front-end designs are complete—you'll build the API layer and connect existing HTML/CSS layouts to a scalable database. Tech Stack Backend: Next.js 14+ with TypeScript Database: Supabase (PostgreSQL) + Auth Payments: Stripe API Media: Cloudflare R2 or AWS S3 Hosting: Vercel Deliverables User authentication (signup, login, roles: buyer/seller/admin) Database schemas for users, listings, offers, orders Listing CRUD endpoints + advanced search/filters Offer/inquiry system with negotiation tracking Stripe checkout flow + webhook handling Image uploads with WebP conversion to R2/S3 Convert HTML layouts to React components Unit tests for critical endpoints API documentation (Postman or Swagger) CLAUDE.md architecture guide for AI-assisted maintenance Deploy to staging domain Timeline & Commitment Duration: 3–5 weeks Communication: Weekly check-ins, async-first Long-term? We prefer developers interested in ongoing maintenance & feature work What We Provide Complete HTML/CSS designs (no design work needed) Wireframes & user flows Supabase & Vercel accounts ready Stripe account access To Apply Include: Portfolio: 2–3 live Next.js + Supabase projects (links + GitHub repos) Stripe experience: Briefly describe a payment integration you've built Estimate: Flat fee or hourly rate for this scope Availability: Start date & time commitment (full-time / part-time)