2 anecdotes ...
1) The worst interview I ever had (BY FAR) was at Google--disrespectful people, no respect for time, I could go on and on. And I went back to try again to get that money showered on me. Worth it in the long run.
2) Their new system for "performance management" is a hoax. Just like at all other places, it "documents" what you should do so they can fire you more easily with unspoken rules and all sorts of arbitrary causes as well. A friend literally hit EVERY pre-agreed target and still got pushed out for "not delivering".
I once failed all my goals agreed upon a year ago but got promoted anyways, because priorities had shifted and the director above me just really, really wanted me to continue building his reputation. (not at google)
Oh I've had a terrible interview at Google too!
They told me it was all about pseudocode and how I think in advance, then on the actual interview they were being annoying about variable names and spaces after comma, while I was supposed to come up with some clever optimisation that boiled down to: "do you know this obscure theorem already? Cool you pass"
Same for me. I applied for engineering manager. Was told it was going to be a code review. I found a bunch of things that it could be improved, detected a very slow part / quadratic loop, but couldn't come up with the best algo to use. It was just leetcode in disguise.
Which theorem?
I don't even know the name. I reviewed the question with a friend of mine who has a PhD in mathematics and teaches at university and he figured it out (after a way longer time than the duration of the interview itself) :)