I received an employee referral and was contacted two weeks later to set up interviews. I scheduled two 45-minute, back-to-back phone interviews for two weeks later.

Two weeks after that, the recruiter informed me they wanted a third interview to collect more data points, so I had another interview scheduled for two weeks later.

Two weeks after the third interview, I was told that I did not get the position. (Google seems to like to run in two-week blocks!)

All the interviewers were very nice. They asked me about the classes I'd taken so they could ensure their questions were within the scope of my knowledge.