Interesting how they are scouting stackoverflow profiles for potential hires. I suppose it takes more than 10k reputation (talking about my own profile of course).
The part about being denied because he was Microsoft-centric and yet Jon Skeet was accepted was quite amusing.
I was approached by Google recently for an SRE position. I'm not sure where they found my contact information but I don't have accounts with any of the major geek sites - or much of an internet presence at all, really.
The recruiter was a tad vague about it but if I were to venture a guess, I'd say Google scans the high-profile OSS projects and associated mailing lists. That's about the only place they could have found me.
I think Google recruiters trawl places frequented by programmers and invite them in. A few years ago, when I was more involved in free software, I got an email out of the blue asking me to submit a resume. I was certainly not as visible in the communities I frequented as this guy appears to be in his.
The part about being denied because he was Microsoft-centric and yet Jon Skeet was accepted was quite amusing.