How is work distributed between Frontend and Backend when developing the site admin panel?

Question

Backend

I am interested in such a question: how is the admin panel for the site developed during teamwork?
It seems to me ideally: Backend is completely occupied with the server part, and only receives data, constantly coordinating with Frontent developers about how and what will be done. And often, a good visual admin panel is a good share of logic in js.
Is this how it turns out in reality, in combat conditions?

Answer 1

Lots of options.
For example, it starts with the fact that the backender makes an API according to the principles of HATEOAS, provided with documentation on the Swagger type.
After that, the frontender is already clear.