I saw amazon at UCSD career fair (DECAF). I talked to an engineer and he asked me to describe round robin. I answered the questions and a week later I got a request to do a phone interview. The first phone interview went well. The interviewer asked me an algorithm question regarding finding duplicates in a list. He had me write it out on paper. When I was done, I read him the code (in java). Basically I used a hashmap to store values in the list, if a duplicate was found the value in the map was increased upon entry. It was pretty straight forward. There was one other restriction but I can't remember. (sorry) The second phone interview was with a senior level engineer. He asked much more difficult questions and didn't allow much time to process the question or do the alogrithms. The coding was done via an online collaboration tool. He wrote some method headers and I filled them in. He really was pushing the pace, wouldn't let me think much about the problems.