Big honey. Wordpress API project

Hello world! There is a large interesting medical project with a lot of functionality based on Wordpress in Moscow and Moscow region. Almost everything is custom, written quite neatly. Many custom types and hundreds of thousands of records. Now it weighs about 50GB due to the large number of media files.

On its basis, it is necessary to make the second project more ambitious, throughout the Russian Federation on a new domain with additional functionality, including the finalization of the layout.

This project is suitable only for a specialist with a very deep understanding of Wordpress, all its subtleties, the ability to write custom modules, rewrite the admin panel and finalize the finished modules. If you worked with wp only on ready-made templates, installed just plugins from the marketplace and used them and this is where wp knowledge ends, then this project is definitely not for you.
You also need good experience with working on THE API, parsing various types of data, working with the database.

Send your projects, developments on WP, tell us what the most difficult thing was done on this engine. And what kind of experience is there in general in web development.

If you have 10 projects in parallel, unfortunately this will not work either - so please assess your time sensibly. Since there is a lot of work on this project and new features will be regularly updated. That is, this is far from a one-time order and not for 1-2 months. Therefore, regular support will be required

Thank you, I will wait for the application and further discussion of the preliminary TK with interested performers