Marketplace Platform – Admin Panel UI, Payment Integration & Marketplace Features (Long-term Work) PROJECT OVERVIEW We are building a real marketplace platform step by step with a clean, production-ready architecture. Phase 1 (VPS, SSL, DNS, deployment) is completed. Phase 2 & 3 (backend core, user & admin APIs) are currently in progress. We are now looking for a strong, fast, and cost-efficient developer to take ownership of Phases 4–7. This is not a demo, not a tutorial project, and not a simple CRUD task. We are looking for someone who understands real products and real workflows, not just code. PROJECT PHASES & SCOPE Phase 4 – Admin Panel UI Admin login UI Admin dashboard CRUD screens for: Products Categories Users Orders React-based admin panel Clean and functional UI (no heavy design required) Phase 5 – Payment Integration Payment gateway integration (Stripe / Iyzico / PayTR or equivalent) Secure checkout flow Order–payment linking Success and failure handling Phase 6 – Marketplace Core Logic (MVP) Order status workflow Product approval logic Stock handling Basic marketplace rules (MVP level) Phase 7 – UI / UX Improvements Frontend usability improvements Performance considerations Basic production-ready polish EXISTING TECH STACK Backend: Node.js / Express Authentication: JWT (User / Admin roles) Database: MySQL Frontend: React Deployment: VPS + PM2 + Nginx + HTTPS You do not need to rebuild the backend core. You will work on top of an existing, working system. IMPORTANT – PLEASE READ BEFORE APPLYING This project is not suitable for beginners. You should not apply if you: Only write backend APIs Have no real payment integration experience Cannot think in product or marketplace logic This project requires: Frontend and backend understanding Payment system experience Basic UI/UX awareness Product-oriented thinking TIMELINE Fast and focused delivery preferred Clear milestones Long-term collaboration possible if this phase goes well BUDGET Budget is flexible and negotiable We value: Clear scope Fair pricing Step-by-step milestones Please include in your proposal: Estimated total cost Estimated timeline How you would approach and split these phases TO APPLY – PLEASE ANSWER BRIEFLY Which part of this project do you have the most experience with? Have you integrated real payment systems before? Which ones? Have you worked on a marketplace or similar product? How would you split this project into milestones? Generic copy-paste proposals will be ignored.