Microsoft Software Design Engineer In Test interview questions

The process started with a recruiter contacting me. They gave me assignments to complete, which I did. I was in Redmond for interviews with 3 teams. 5 interviews in total. All rounds were technical. They gave me problem statements, asked me to write pseudo code and explain my approach to the problem. In subsequent rounds, the difficulty went up and the final round was something I had never encountered. It was about writing an algorithm to detect the highest point in a contour map. I honestly did not think I would clear it. But I think this is an as-appropriate interview. If the candidate is found to be suitable, they talk to a fairly senior person. This person will go deeper and deeper to check a person's grit at problem solving. I think they want to see how determined you are to reach solutions - a skill that is very important at Microsoft. So I gave my solution and the person kept asking me for more and more info. At some point he must have decided that I had hit my limit. I got the offer.