Build me an Android Application of Online grocery shopping.

I want an Android App developer who is skilled in Java and uses Android Studio .The details of the application are as follows -> [login to view URL] should contain user login such that they can maintain there database of groceries bought till [login to view URL] do the parse hosting, platform used should be "Back4app". [login to view URL] method should be via paytm,upi,netbanking and debit/credit cards. 3.I will provide you the textual details and few specific photographs when the bid gets finalised. Great work is appreciated .