There are 3 main steps Amazon has been following for interviews.
1- Online Quiz
It took me to my high school years as all the test questions were composed of basic math measurements based on graphs, clusters and tables. You will need a peacefull place and calculator while solving the problems.
2- Online Interview
If you succeed the 1st step, you will receive a call from a manager of any Amazon office (and any department) which will last apprx. 45 minutes to discuss about your background, any projects yu held and any success you had previously. Be ready to get questions for specific details of your background as the interviewer will be ready enough to ask those (he/she wil already have your resume in advance).
3- Face to face Interviews
This is the most difficult part of the whole process. In my case, I had consecutive F2F interviews with 5 different Directors from different departments and each lasted at least 45 minutes. I had only 5-10 minutes breaks between the sessions. Research the STAR approach if you have no idea as all the questions are subject to that methodology. Here are some questions I got:
-- Tell me about a time when you had to convince the people who were not supporting your idea and what was the outcome?
-- Tell me about a time when you were leading a group, were assigned a goal, and did not reach it?
-- Tell me about a time when you had to make deep analytical analysis to make a decision but you had no enough time to do that. How did you handle the decision making and what was the outcome?
-- Tell me about a time when you resolved conflict with coworkers, and what did you learn from the experience?
-- Tell me about a time when you didn’t make the right decision and what did you do to resolve it?
you didn’t make the right decision and what did you do to resolve it?
-- Tell me about a time you used so much data to make a decision.
-- Tell me about yourself.
-- Why Amazon and where did you hear about this opening?
You can get the same questions from different sessions; which I think thay want to see your consistency. Be well prepared for at least 4-5 previous projects you held to use for STAR approach. Be specific and try to give all the details regarding the case.