The main differences are:

First, the level is different.

The general manager is the first person in charge of the project and is responsible for the project.

The operations director is a project operations manager under the leadership of the general manager.

Second, the responsibilities are different.

The general manager is the executor of the project management and comprehensively manages the entire project.

The main responsibility of the operations director is to coordinate and organize personnel, equipment operation, project progress, etc. to ensure the smooth progress of the project.