I first applied for the position while a recruiter was at my college for a job fair event. After that, I was contacted about a month or so later and scheduled a phone interview (or rather an online phone interview). The phone interview was all business, no personal questions. The interviewer asked me to start writing something that seemed somewhat simple, in whichever language I preferred. After a sufficient amount of time coding and asking questions (roughly 45 minutes) he had me stop and asked a couple of questions on my thought process in coding the answer. I was contacted a few days later and asked if I could fly out for an interview. I accepted and went to their headquarters in Washington. The day starts relatively early, around 9:30AM and goes "until you're finished". The basic process is they hand you the location of your first interview, either walk you there or get you a ride there, and continue handing you off between Microsoft employees that you will potentially be working with. Usually each person asks you a couple of personal questions and at least one coding question. Some people may seem like they're ignoring you or acting strangely around you, but I believe that's all part of the interview process. Asking questions is a vital part of the process, as they want someone who is willing to understand something from top to bottom before they attempt to write code for it. As some other reviews have said, towards the end of the day you may or may not meet with your fifth interviewer in the event that they may "be busy". Whether or not this is truly an indicator of your progress, I'm unsure. All I can say is I interviewed with four out of five people and did not receive the offer. Fortunately, I heard back the very next day, so there wasn't too much anticipation.