Microsoft Software Engineer, Intern interview questions

On campus interview. They asked me a question that wasn’t exactly possible, so it was kind of a stress interview. They then flew me out to the HQ for a couple of days. It was a really nice experience. For one day they had me do 3 or 4 interviews at HQ.

The interviewer didn't ask about any of my backgrounds and started throwing strange questions, including linear algebra, server-side concepts, front-end design. Very impatient and unfriendly person, seems wanted the interview as soon as possible hence giving me some random questions