Microsoft

2 rounds, online -> virtual superday. Final round was 3 45-minute interviews w/ a mix of DS, LeetCode, and light sys design. LeetCode questions ranged from easy-medium, and the sys design was around designing a logging system.

The interview process was really straightforward: solve a palindrome using any language you would like. I came in without any idea of what they would ask me, but it was a good experience.

The interview process was long and drawn out, with many rounds of interviews. Some interviewers asked the same questions, which was a little concerning. However, all the interviewers were very nice people. I would recommend fewer interview rounds.