Phone screening followed by an interview with the hiring manager.
Flew to Cupertino for the on-site interview.
There were 6 interviewers and lots of questions, mostly focused on communication, DSP, and PHY layer algorithms.
OFDM basics
Channel estimation method
Cell search procedures of LTE/5G standards
The following metrics were computed from 2 interview experiences for the Apple DSP Engineer role in United States.
Apple's interview process for their DSP Engineer roles in the United States is extremely selective, failing the vast majority of engineers.
Candidates reported having very good feelings for Apple's DSP Engineer interview process in United States.