Need backend for an ecommerce app.

Hi I need someone to code backend for my app which is something like a fast grocery delivery system.
In the start i am thinking to go with firebase for speed and less time to market. I have plans to migrate some of the stuffs to AWS as we grow. Also I can hire you for working on my app fulltime/parttime as this is going to stay for long.
Also I have worked on frontend and its in react native plus point if you can integrate the backend into the app.
Willing to hire someone good in python, java or any of the backend languages.
Will be willing to hire someone new. I am an experienced dev myself and will help you along the way with anything hard.
Please dm me with your proposals and write good-luck so that i know you are not a bot