I want partner who has already created Grocery app/web?

I have offline stores already in my location, so i want experienced full stack or ceo of groccery app or web application which is already working. i need prototype those app into my stores and he can be my shareholder of business if he can help me how to build and sort out this digital ecommerce store?
Or who is interested who can build me groccery delivery app i can pay as well as a service who is already done this kind of projects?