Google

I was reached out to via LinkedIn. I spoke to a recruiter, and they helped set up a phone call with one of the engineers. During the interview, I was asked two questions, and the engineer asked follow-up questions on both. The engineer was friendly

No recruiter met me; straight to developer, who was 15 minutes late. 45 min per interview, 5 technical interviews. Very algorithms focused; no system design questions. Hardest interview I've done. Requires a lot of algorithmic knowledge.

I was referred by a friend and first approached by a recruiter from Google. They asked for some basic information, and then I had a phone screen. The interview problem was hard for a phone screen, but I can't complain; Google sets the bar high.