The process took 1 day. I interviewed at Google in May 2010
Interview
Interviewer was an ex-Microsoftie, with about 2 years of experience both at MS and Google. The interview questions were standard MS and Google style questions. Interviewer didn't ask any thing about work, background, education. Got the rejection an hour later.
Interview questions [1]
Question 1
How many tries will you need to find out a heavy ball from a set of 9 balls. How can you minimize these tries.
Very self-driven, first of multiple rounds, where I had to take the initiative to arrive at the problem, constraints, approach, solutions, tradeoffs and reasoning behind it in a matter of 30 minutes.
You would have to do a hiring assessment first, then a recruiter screening follows. First round interview with the hiring manager. Majorly product sense and product improvement. The questions were not direct though.
Overall a lot of steps to the interview process. Talked to different people and had opportunities to ask questions. Many different stages which made it a lengthy process overall. Wasn't too bad.