Product Engineer is a group in semiconductor and other manufacturing. There are multiple competing groups, the factory, quality, test and design engineering. The factory wants to produce, does not matter if it is good or bad. The quality team will never ship anything, it's not good enough. Test wants shorter test time, so everything passes, or test later in the process will catch the issues. First stage test passes all, or passes nothing. Either way is bad. The design team wants to toss the design over the wall and everyone else handle any problems. Product engineers try to find balance. We were responsible for the overall yield. Not an easy job.