Don't pay any attention to the negative reviews of Amazon's interview process. They've got this thing wired now. The phone interview went off without a hitch; basic leadership type behavioral questions. Within two days I was notified that they would fly me out to Indianapolis for another round of face to face interviews. The math problem and case studies came in an email shortly after that. The point of contact for this process was locked on and professional. The flight and hotel and rental car were all taken care of. When you get to the interview location you will be put into a small group with a minder to escort you around and get you where you need to go. The interviews were three 1:1 interviews and then the math/case studies discussion with senior management types who came out specifically for this event. None of them were combative or grumpy. I estimate that about 200 candidates went through the process, spread out over three days. The Talent Acquisition personnel were very helpful and gave out lots of pointers on how to do well in the interviews. They were very clear that we were not competing against each other for one job. They have hundreds of openings and they are looking for solid leadership skills that make for a good fit within their corporate culture. Each interviewer had a competency to focus on. Figure out what that is (it will be obvious, in fact he or she will probably tell you what it is) and then bend all your answers to that topic. They tell you several times during the process to bring up numbers and quantified success. My advice: even if the question has nothing to do with numbers, like a leadership or motivational ability question, put numbers in your answer anyway, and do it at the start of the question. ("When I was with XYZ Corp., a 2.3 billion dollar company, in charge of n employees, I showed leadership by...") The math flow and case studies are more conversational in nature. And when they say 'show your work' they mean they want to see the actual full-out equation that gets the numbers you talk about. After you go through that the curveballs start and you just describe how you would adjust. It was the portion of the process that I feared the most and it turned out to be my favorite part. There was no problem with my return flight and the offer came in the next week. I accepted.