The interview process consists of 1-2 technical phone interviews, and an in-person technical interview. Each phone interview is about 45 minutes to 1 hour, and the in-person interview consists of meeting with several different people over a period of about 4 hours. It seems to me that the second phone interview is done if there is some uncertainty as to the skill level of the candidate. I managed to get a second phone interview, however I did not make it to the in-person interview. My best advice for the phone interview(s) is not to answer any question immediately if you have the slightest doubt your answer will be insufficient. Taking a minute or two of silence to take notes and think about the problem in silence is better than giving a weak or insufficient answer. I am certain the same strategy would apply to the in-person interview. I also highly recommend going to the interview coaching sessions that Google hosts at their offices, it was very informative. One last thing to note is that Google's hiring process is very slow, and recruiters tend to take awhile to get back to you. Expect it to take 4-6 weeks to finally receive an offer if you manage to get through the entire process, and keep this in mind while dealing with your other potential job offers.