Does the decoration industry "contractor" have a nice name?

The project manager is a formal position and a part-time job, and there are people in charge of it, but it is not as comfortable and affordable as the contractor, who is a boss who makes his own decisions regardless of size.

"contractor" really doesn't have a ready-made professional title. It can be called "project contractor" or "project contractor", and its responsibilities and interests are entirely borne and mastered by itself.

if the project manager doesn't get paid, he will completely contract the project, which can also be called "contractor".