Apple Hardware Engineer interview questions

Very experienced interviewers. They asked and talked about detail questions, mostly about optical design, control of hardware, LiDAR systems, time of flight measurement. Each of the interviewer has one specific area of focus, probably based on the project they are doing right now. Looks like apple is making efforts to the autonomous cars and face ID et. al

background and project based questions. Focus on the senior level questions and HM management style discussion. Later followed up with no reply yet. Overall a good practice case. Will apply sooner.