Amazon Web Services Software Developer interview questions

Most of the interviewers were quite nice, until one guy from another team(not the hiring team). He asked a system design question. When I process the problem, he didn't quite discuss it with me but just said we don't have time and go through it quickly. I felt he just doesn't want to give me a chance.

Amazon responses are too long to wait. Due to that my interview was rescheduled 4 times as they could not find the interviewer for my given availability schedule. Also, there are too many employees involved in the interview process, so I could not catch up who is responsible for the scheduling. Overall, the interview itself was unexpected, because I was prepared for coding(as I was told that all software related positions will require coding), however the task was related to front-end application building. Therefore, I failed.