I am looking for an experienced developer/team to build a grocery e-commerce mobile app with backend system. Mobile App Flutter app (Android first, iOS later) Clean grocery UI (similar to DMart/JioMart) Product listing (8000–10000 products) Search, categories, filters Cart & checkout COD + Razorpay payment OTP login Order history & tracking Backend Scalable backend (FastAPI preferred, Node.js also acceptable) Proper database design Admin panel for orders & basic product management API-based architecture Inventory Products will be synced from external system (Oracle) Support CSV or API import Location Feature Same products for all locations Only discount varies by location (Vapi, Daman, Surat) Deployment Must support full deployment on my server App APK build required Important Full source code required (no restrictions) Clean and documented code No dependency on developer accounts Questions (Mandatory) Share similar app/demo Which tech stack will you use? Experience with large product data (10K+) Timeline Cost Will you support deployment? Looking for long-term collaboration. Thanks