Amazon

I was given the wrong time for my interview several times, and recruiters told me conflicting information. Other than that, the technical side was a pretty standard online onsite, consisting of four interviews with two engineers or managers each.

One interview round with standard questions. Knowledge of basics and conveying your thought process is very important. Take time prior to the interview to calm yourself and communicate with the interviewer with a cool mind.

First interview with HR over the phone, then there is a loop interview with four stages in a row. All communication is via email, and they don't provide open feedback about the process.