Very friendly and open. Strong emphasis on problem solving and interpersonal skills and little emphasis on technical minutiae. (The initial interview was pure code but no gotcha questions.) The on site interview was four one hour sessions with either one or two people (the second being a shadow interviewer in training) with fifteen minutes of algorithm stuff and forty five of problem solving. (One was just problem solving). The only negative with all this is that it was very compressed (no breaks between sessions except for lunch which was with another employee) I was recalibrated afterwards and had to do an extra interview by phone. (I scored high on a newly added question so I was reinterviewed on the question it replaced.) The result was that my offer improved. Throughout the process everyone involved was friendly, open, and within limits helpful.