From what I read on /r/engineering, a lot of engineers complain that their jobs look like what you described - compiling together parts from different vendors'

From what I read on /r/engineering, a lot of engineers complain that their jobs look like what you described - compiling together parts from different vendors' catalogs. A lot of people are resentful that they get to use maybe 2% of the cool math-based knowledge they got in university. It looks very similar to the resentment a lot of CS grads working in software engineering are experiencing.