Microsoft

The interview is long and even if you pass, you'll be put on a list and have to wait for a hiring manager to call. It is 6 hours long with breaks. You get to meet different engineers.

A recruiter contacted me in August through LinkedIn. I gave them my CV, and around October, I had a phone interview with a different recruiter. This phone interview was focused on reviewing my CV, past projects, and common programming issues such as

I had four interviews, of which three were related to CS theory. The last interview was project-related. The interviews were relaxed, and the interviewers themselves were very helpful and kind.