The interview was very technical...no behavioral questions. Lots of problems to work on the whiteboard. The problems were relevant. They only asked things that you said you were familiar with or should be familiar with. The interviewers were very technically competent and overall I would say that Apple is looking for the very top people. The interviewers were cross functional and included several managers. There were about 8 or 9 interviewers, one-by-one, 30 minutes each, in a small room. It was exhausting but I think it is the way a top company should interview engineers if they want the very best. Cafeteria food is good!