Amazon

Tested a good amount of data structures and algorithms. In round 2, questions around CS basics were asked. In round 3, questions on resume projects were asked. The final round was with HR and included simple, fun questions.

I just finished OA. It wasn't too hard, but the time limit was short. Questions were mostly medium to hard level. You need to prepare for commonly used data structures, leaning more towards complex ones.

6 Interviews. Including 4x1 hour back-to-back. 15 minutes of questions about my past experiences to match with their leadership principles. Rest of the time live-coding on a notepad-style IDE. No autocorrect, no nothing.