Worldwide Grocery Delivery Platform

I need a full-scale delivery platform focused strictly on grocery orders. The goal is for users to open an app or website, choose items from local stores, pay securely, and watch their groceries travel to their door in real time. Think of it as the seamless convenience of a food courier service, but dedicated to supermarket runs rather than restaurant meals. Please take charge of the entire build: customer-facing interfaces, driver app, and a lightweight merchant dashboard that lets shop owners update inventories and accept or decline orders. I want live order tracking, in-app chat between shoppers and drivers, multiple payment gateways, and robust location services so ETAs stay accurate whether the user is in a major city or a smaller town. Cross-platform mobile frameworks such as Flutter or React Native are welcome, and I’m happy with a Node/Express or Django back-end so long as the stack you choose scales cleanly and leaves room for adding new regions later on. Clean, well-documented code and launch-ready builds are the final deliverables.