membership site that uses API calls to bring in data

Description

Hello,
What I am looking to have developed is a membership site for my users. That will have the normal login and register operations, user back offices, payment integration for purchasing memberships. As well as add on purchases from the members area.
I also need to have api's created, and interact with some other api data from another company that I will be using to pull data into my back office for users.
Please let me know if you are available for this Thank you