[baguette]

The answer is simple: the person who is interviewing you hasn't got as much experience as you do. He doesn't know through what hoops and hops you've gone through to get there. Therefore, he is testing you in a framework that he perceives to be right. In all fairness, for 99% of the candidates, that is the right approach.

I fit more or less the description of your profile (except I have GH projects with 5000+ stars and ~3K side passive side business; oh well, I'd prefer your balance, haha). I find it extremely hard to find the right position to work in. I am a consultant and I move from one position to another every 6-8 months. However, I have been most lucky in my last two positions.

There is something bonding about being recognized from the open source work. In that respect, the last interview I had felt more like a coffee break, discussing various project promoting strategies with the CTO. And yet, I had to go through interviews with another 3 developers (all happened in a time span of two hours, on the same day). But, thats their hiring policy. Just get done with it and enjoy the ride.