Yes, he worked with engineers, but he would be the first to tell you he is not an engineer himself. From his book The Dilbert Principle (page 171):
For the record, I am not an engineer by training. But I spent ten years working with engineers and programmers in a variety of jobs. I learned their customs and mannerisms by observing them, much the way Jane Goodall learned about the great apes, but without the hassle of grooming.
Yes, he worked with engineers, but he would be the first to tell you he is not an engineer himself. From his book The Dilbert Principle (page 171):
I stand corrected. (But I do think he has absorbed enough of the engineer’s viewpoint to make it noticeable.)