I worked for a German startup too and our main problem was not vetting interviewees but finding people who want to interview at all. In the five year history of the company I think only one single person was hired who was not already friends with someone at the company. Other people just never applied. I remember manning the booth at one of those college campus events and it was very lonely. I probably talked to thre…
"Oh, yeah, I see - you've got 10 years of experience. But what's that? You don't have a diploma? Nor a 'Ausbildung'? Sorry, in this case I just won't look at your prior work - no matter how cool it might be. Have a gut day, sir! No job for you."