Google Software Engineering interview questions

I was contacted by a recruiting contact from HR. From there I was passed off to another contact who scheduled two back to back, 45 minute coding interviews. The first interviewer was very pleasant. After initially asking a question on which I fumbled, we spent the remaining time working on one question. The question itself wasn't terribly difficult, but it was intentionally ambiguous, to make sure I asked the right questions. After clearing up details we discussed optimizations, etc. This is probably the part of the interview that was most enjoyable as it didn't really feel like I was getting grilled. It felt as if we were discussing a problem and different approaches we could take. The second interviewer had a bit of an accent and seemed a bit less engaged/helpful. Also, the questions he asked were significantly tougher. All in all the process went very smoothly.

I uploaded my CV on google's carrer website for that specific position. More than one month after I was contacted by phone to send an email with my CV and answer to 4 questions (dealing with my personal value, as a professional as a possible google employee). A new phone call was scheduled. This phone call took 15 minutes more or less and it went as any other regular interview. After that I was told that I would be contacted in the following weeks. A month or so after I received an email saying that they liked my profile, although at the moment they don't need my competencies but that they would keep me in their recruitment database for the next 6 months.