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In my previous line of work, we used AutoCad for facility layout. It was handy for laying out work cells, keeping track of where the over head cranes traveled, and knowing what we had to move for new equipment.

Creo (formally ProE) was what was used for product development, fixture design, prints, and making 3D models.

Esprit was used for programming the machining centers and the Creo models were imported for this.

What software a company uses and what you are experienced in using will play a role in where you can end up working. I always said if you can use one, you can figure the others out.