Microsoft Sr Software Engineer interview questions

Had 2 interviews, both technical, various algorithmic and general knowledge questions. It was done in a very nice atmosphere and I got the notion the employees there love their job

The interview was divided into 2 stages. First was a qualifier round where I was asked to solve couple of Data structure question on white board. Later I was called for a full day process on Saturday. There were 15-20 candidate. Every round was elimination round. There were total 43technical round followed by one interview/discussion with hiring manager. I was told on same day that they are going to offer me.