Apple Developer interview questions

The phone interview consisted of just questions about my past work experience. Then got called for an on-site interview. The interview lasted 5 hrs with 30 min interviews with 10 people, including one with HR. Most of the questions were about my past experience here as well. Included a lot of drawing on the white board to explain the architecture of software I had worked on. There were some programming questions as well, which were quite simple, like code for fibonacci series and factorial using both recursive and non-recursive methods, counting the number of 1s in a variable, writing code for a circular buffer. Also had questions on OS, like memory management, interrupt handling, preemption etc. I thought I did well, but did not receive an offer.

I was contacted by a recruiter through LinkedIn describing job opportunities at Apple. I currently work in a very narrow area of expertise, which is 3D graphics for embedded systems, and so they thought I was a good fit for their position. I explained to the recruiter that in order for me to switched jobs the position had to appeal me and so he said I was going to be interviewing for a Display Controller role, which of course I wasn't that excited about, then he said that there were more positions opening up and that I could interview for any of them, so I agreed after I saw a Software Engineering role. The recruiter scheduled the phone interview a week later and he said the manager of one of the teams was going to do the interview. To be honest I really prepared for this phone interview and I concentrated on generic Computer Graphics concepts, Operating System concepts and C++ concepts, and to my surprise that were exactly the topics we covered during the interview. To my surprised though the manager of the team didn't show up but rather a technical lead with a very strong asian accent, so I was asking to repeat himself on my occasions. In general I thought I did a decent interview as I was fully prepared yet he thought I wasn't really a good fit for the position; I had the feeling because they were so desperately trying to fill the display controller role for which I already said no, yet during the phone interview the tech lead guy did ask me if I was interested on that role!