Partial revision of the Backend site, setting up a payment card, launching

Have a good day, everyone.

I will start with the fact that it is worth first looking at this site - https://skillmi.ru/
We have the land itself in our archive. Also, his landing page is fully loaded on the server with the domain.
The main part of the work is the Personal Account.
Below I enclose the Lk which is fully made up, ready, the only thing you need to connect it. Configure the database and in some places extend the attachment of data in the clients login.
Also there is a figma under it, you can see - https://www.figma.com/file/qiLUDgYVZWA73Np88nDIEI/...
In case of problems, we have a designer, we will fix everything, give it away, etc.

We are looking for a specialist on Backend on our projects, on javascript, because our Backendshik unfortunately for certain personal circumstances could not finish the project.

The main challenge now is this. Configure, connect to DB, configure mail gan. Just set up and screw the payment through Yukassa (Yandex).
Here you can get acquainted with the api connection - yookassa.ru/developers

If you have worked with similar projects on online courses, we will be glad to receive your recommendations for setting up and possibly installing additional options. Also paid.

It is desirable to work with a payment card, because basically there are difficulties on it, who have never worked and did not set up a payment card. These will be recurrent payments, as well as the withdrawal of money by a ladder in descending order, so it is not easy to screw a ready-made solution for withdrawing 1 payment and thats it.

We are also looking for a Backend developer, I would like to cooperate not 1 time, since then there will be similar projects in which we have only layout ready.

The budget specified by us is the minimum, it is being negotiated.