Amazon Developer interview questions

Applied on-line, set phone interview: First phone interview: talked about resume; past project, concept design, technologies, he asked so many question related with my projects; then he asked OOP - OOD; then shared document and gave me four function and asked to choose any 1 to complete, all of them were simple: int to string: palindrome; count max char. appeared in given string; he was cool and friendly. Second phone interview: He was busy in meeting so reschedule on same day, he talked in-detail of projects design: and core logic part of all my projects one after one, He planned to ask programs, we didnt get time: but he was so impressed and he liked all my works and answers. Take-home project: As I expected but without any notification they gave me simple problem to solve and willing to submit within 2 days, I was busy in other work so 1st day wasted: he expected some questions from me: and I asked some, as problem was so simple, I asked view questions: My solution was perfect as he want: submitted final answer. End-up with no offer :( may be I asked few questions and he wanted some more

An external recruiting consultant put me in touch with the company and suggested 2 positions that matched my profile. I had phone conversations both with the recruiting consultant and with the actual Amazon recruiter. The questions were generic about the kind of work I was doing and why I wanted to leave, why I was interested in Amazon, if I needed a work permit, etc. Then I had a first technical interview via phone with a dev from outside the hiring teams. Apart from questions about Java, she asked me to code some graphics algorithm - to display a certain pattern on the screen. I found it funny that I had to write the code on paper and read it out loud, for her to write it down !? (Maybe these days they have some form of shared editable document such as collabedit). The second technical phone interview asked questions related to the position applied for, trying to assess if I had the right background and if I was familiar with the problem domain. We finished with some OO design - I was asked to design the elevator system for a building. Finally, I had 2 on-site interviews, with the teams I was interested in. In both cases I had discussions with the hiring manager about the specific charge of the team and the current/future projects and plans. The 1:1 interviews with the devs were not directly related to the team's area (with the exception of one request to design a "Subscriber - Broker - Publisher" architecture (a) running on a machine; (b) running on a cluster) but rather design and implementation of "real" (or realistic) problems (resolve a puzzle; analyze the patterns usage of a parking area; find contradictions in a person's set of statements about a drag race). So the problems were very practical and required some design, as well as implementation or sketching of an algorithms, rather than "textbook problems" such as traversing a tree or reversing a linked list. The place looked quite frugal (the desks were cheap wooden desks) and chaotic (I was told that each team decides what language and environment to use, and what versioning system.