Amazon Principal Software Engineer interview questions

Tough but fair series of interviews. Definately what I would expect at this level. Seven interviews with different parts of the team as well as the bar raiser who definately raised the bar. Questions went beyond the role itself to more leadership type questions.

The interview process includes behavior, bar raiser, coding and system design. About 8 interviews in total and each one is about 1 hour. The whole procedure is about 2.5 months long.