I was contacted by an Apple recruiter. I then had a phone screening with the hiring manager, which went well.

After that, I received some technical exercises that I had to complete within 2-3 days.

Another recruiter then followed up and scheduled the on-site interviews. The interviews were both technical, as well as personality and program management oriented.

My 1-1 interviews went very well, and I was very surprised I didn't get an offer. I asked about the reason and for some feedback, but didn't receive a response. I am confused to this day.

On the technical side, the questions were mostly signal processing, appropriate for the positions, and included some coding.