Build and set up a membership site

Web developer services are required. We need a developer who organizes membership with these tasks:

Brief TK:
At the first stage, a person clicks on a unique referral link and gets to a one-page site (already ready, a contractor is not required) which tells about the product. In case of interest in purchasing a product, a person moves to a new source and passes registration. After that, he immediately receives a letter to the post office with a login and password and his referral link. Next, clicking on the link with the access, he or watches a video with short useful content (in consideration), and at the bottom of the payment form, or immediately pays for access to the marathon (on this platform).


Functional:
Adaptive version
Acceptance of payment (all possible types of payment)
Video (not downloadable or copied)
Report under each video - text and the ability to attach photos and videos
Integration with social networks (after completing the task, i.e. writing a report, a person clicks "DOTE" and automatically he has a post in the social network with a report "I participate in the marathon ..." and a photo if attached, if not attached, then a standard photo of the marathon itself)
Review of reports (analysis of their work)
Timer for deadlines for tasks
Referral balance (each member of the site will have an individual ref link)
Set up the metric.

Priority is given to a developer with experience in creating information business websites. Payment by arrangement. Detailed TK after the interview.

I am looking for a responsible developer with experience.
The selection will be very picky, as they are aimed at long-term cooperation and the project is carried out for a public person.