Amazon Sr Software Engineer interview questions

TL;DR: The interview process at Amazon is broken. Amazon favors those who are experts at interviewing and show aptitude for solving puzzle problems under pressure, on a white board and in an academic way under time constraints. The interview is structured in a way that completely obfuscates and diminishes real-world, pragmatic experience acquired over the years of writing software and focuses on how well you payed attention in class. It's a kin to a trauma surgeon with 15 years of battlefield experience being judged solely on how well he or she can suture a small cut on a pinky finger. The interview process started with a recruiter organizing a technical phone screen with a simple coding question much like every other company. The phone screen was easily passed and did not present much of a challenge. The next step was to interview all day on site with several individuals some of which were by remote video conference. Many of interviewers were from teams other than the team I was interviewing for and it was evident by their demeanor. They seemed to have been required to perform the interview and did not seem overly interested in the outcome. The words "robotic" and "forced" comes to mind when describing the interviewers. On a side note, you can easily infer the outcome of the interview by taking note of the recruiters attentiveness to you before and after the interview. In my case, the recruiter was responsive to my inquires and questions, answered the phone and went out of her way to be available to me before the interview. After the interview had taken place, she was unavailable and would not return calls as promptly thus indicating a negative outcome. If there is a rejection, you are dead wood to the recruiter who does not wish to waste precious time with you anymore.