Stalking the LinkedIn, it seems he quit, switched to a PhD in CS and has been working at Google for the last 12 years.
Also, there are many a decent xysicists in tech. Physics skews to supernerds like good CS folks, so there's quite a bit of problem-solving and subject matter crossover beyond the closest neighbor, EE/CS.
The Goog has pockets of okayness here and there, so maybe they've found a comfortable home after 12 years. :)