What are the professions that can be pursued after learning plc, please answer

According to my current contact point of view, learning PLC is mainly engaged in 1. the development of non-standard automatic equipment, where PLC is used in a very large number of places. 2. the maintenance of automatic equipment in factories, which includes coal mines, petroleum, medical, automotive and other automation degree of the industry is more widely used. To give the simplest example, our factories will often put forward automation requirements for certain equipment, this time we need to have a supplier to help us do equipment. The supplier will design for our requirements, part of the mechanism design, the other part is the electrical circuit design. The electrical circuit design is to plan the functions that can be accomplished with those electronic components, and then use PLC to program and control the mechanism and electrical components to achieve the intended action, which is most convenient nowadays to use PLC control to realize. As for what can be done on too many projects, such as elevators, automatic loading equipment, automatic assembly equipment.