Multiple rounds of interviews both technical and non technical. First interview was technical and asked basic common programming questions. The non technical interviewer asked the common questions and the whole process was nice and casual.

After sending in my resume, I was contacted by HR a few days later. We had a casual phone conversation, then about two weeks later I had a phone screen. Two weeks later, I was brought in for an in-person interview. The interview was with 4 different people, 1 hour each. Some whiteboarding, but mostly conversational. No problems to solve, but instead just talking about my experiences with different technologies and languages. Had some specific C# questions to answer, but nothing too hard. Offer arrived about 4 days later.