Amazon

3 Rounds, 45 mins each. There were three technical rounds with average difficulty. The first round was a technical and behavioral assessment. The technical portion had two technical questions, and the behavioral portion was mostly work style assess

There were three interview rounds: * One with the recruiter * One with the tech screener * A marathon session with four engineers Each was about three to four days apart. I had to email them back to get feedback. This was my third application

First round OA. Second round is a 4-hour back-to-back interview with senior engineers and group leadership, targeting mainly algorithms and data structures. The first two hours are general; the last two are technical.