Amazon

Online test and a technical interview. Thirty-five people were shortlisted from my campus for the interview rounds out of 300+ candidates. Fourteen people were selected finally. I didn't get selected.

First round: Aptitude Assessment. Second round: Technical interview (Data structures and algorithms). We had to write pseudocode while the interviewer increased the difficulty. I haven't received details for the next round yet.

The online test consists of two software development questions. Examples are available on their website and are likely freely available/open source. If you want to get a feel for how the interview test will be, you should take the practice test. It