I applied online. Heard back in a month in early January, and had two 45-min back-to-back phone interviews in late January. The interviews are technical. But the first interviewer had a strong accent that I couldn't understand some problems and had to ask him to say them again. The first interview asked about my experience with Amazon.com, what I don't like and what I like. Then there were a couple of data structures problems on array, string and etc., regarding time complexity. Then he asked me to program online given a string, convert it to a number. Then test cases of the same problem. The second interview was about graph. Given two nodes in a large relationship graph like Facebook, find the shortest path from one to another.