Two days of interviews with managers. If you make a good impression with managers on the first day you will likely be asked to come back for a second round. The decision is usually made after that. It really helps to have a referral. The majority of new hires are employee referred.

Two rounds of interviews, interview style casual to moderate. Basic questions, a lot about whether you fit the culture. It's really on weather they like you like you or not. I felt I had a good rapport with the interviewers, however I could have conducted/presented myself a little more professionally...ie they expect you in a dress or pant suit