Got an initial call from the recruiter through employee referral. Recruiter asked standard questions like what am I interested in, what my other options were and whether I was interviewing with other companies. He then asked me suitable dates for an initial phone screen interview with one of their managers. Once the phone screen was over, recruiter got back to me saying they would like to invite me over to Apple campus for further on site interviews. I gave him a few dates I was available at and recruiter scheduled 4 interviews with team members I was going to work with if I was hired. The designation of interviewers ranged from peers to potential manager to department VP. All were half hour interviews. People seemed really excited about being at Apple and working for one of the most successful company in the world. They all were very friendly and nice to talk to. Apple cupertino campus is beautiful. There is a lot of diversity at Apple. On the top of this, they all seemed really stressed out with work. The perception I got was that work environment is really hectic at Apple.