Mechanical engineers have two development directions: one is technical direction, that is, experts in the industry. The other is the management direction, becoming the technical management personnel of the unit;
As for wages, there is no maximum. If you are the top technical backbone or expert in the industry, the technical director of a large enterprise, and if you have a special R&D project, it is possible.
No matter which profession has a future, it is important to work hard!