The project engineering manager and the project department manager need to see what units are recruited. If it is a non-construction unit such as a real estate company, it generally refers to the on-site management of a real estate company in a development project, but the project manager may require a higher level than the project engineering manager. The former is responsible for the operation of the whole project, while the latter only needs to be responsible for the work of the project in engineering.

If the recruiting unit is the construction unit, the work contents of the three are basically the same.