Rather than doing this on the individual company level, which leads to all kinds of problems that many other comments here have noted, it would make sense to do

Rather than doing this on the individual company level, which leads to all kinds of problems that many other comments here have noted, it would make sense to do this on an industry-wide level. We should have something like a "Master Engineer" credential that should require another master to vouch for you and some rigorous testing. If implemented correctly then it would become obvious that asking FizzBuzz type questions to master engineers is a waste of everyone's time. If we want to be treated like professionals, we should have professional standards. After all, when doctors go for job interviews nobody asks "what is a cell?"or to diagram the Krebs cycle on a whiteboard.