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 was pretty easy. The technical question took 3 lines in Python. The interviewers seemed inexperienced, and the recruiter took 3 months to respond. I would have rejected the offer either way.

I applied to a data science job and put my resume in their candidate pool. Later, I was contacted by a manager from MS's experimentation platform. I then had a phone interview with a SWE, and next was flown out to Seattle for an onsite interview.