The interview process consisted of two steps:

1. Two 45-minute phone interviews (back-to-back) with two different engineers, focused on coding algorithm questions in a shared Google Doc.

2. Two back-to-back 45-minute Google Hangouts interviews with two engineers, again focused on coding algorithm questions in a shared Google Doc.

The first round questions were fairly straightforward algorithmic questions. The second round questions were significantly more difficult.

They asked about my background for the first ~5 minutes. The focus of the interview was coding an algorithm, then testing your code (~35-40 min). There were a few minutes for my questions at the end.