Amazon Lab126 Sensors Engineer interview questions

Very unprofessional process, starting from recruiter communications, then onsite interview scheduling and the team who did the interview. They bring people from way outside your area to judge you, not only that, they also bring undergrads with 2 yrs experience to judge a PhD applicant with 5 years experience. So outside your field (i.e. Mechanical engineer to judge and electrical engineer) plus being much less qualified and experienced than you (i.e. Undergrad with 2 yrs experience judging a PhD with 5 yrs experience). Because of this they ask questions from nowhere and mean nothing.