Their first approach to me was to build a simple game that took me about 1-2 hours from the scratch. They preferred it in c#, which I did. About a week later, I had a phone interview with one the of tech leads for about an hour. It didn't really have much about behavioral, but mainly on technical Q&A style. Then it was onsite that took 3 hours. First portion was a written test, then 3 sessions of interview, 2 technicals + 1 behavioral. They gave you some restroom break in between if you wanted. Then you go home, wait for their response. To give you an advice, I did not-so-great on white board question, as in I got the rough solution but wasn't able to jot it down (ran out of time). Don't be discouraged if you do so. That is not the only thing they look after you. They already know you're decent at programming, so appeal your personality more. All my interview sessions concluded like this, "I had a good time."

Started the interview process at the beginning of February with a quick phone interview. Asked basics about experience / previous projects which was followed by technical questions. After a few days this lead into a programming assignment. After a week or so there was a Skype / group interview that involved speaking with several members of the team and several live coding questions. Again, lots of questions about previous projects and technical questions. After another short wait, I was flown out to their Round Rock office. This interview stage started with a test (programming terms and problem solving questions), followed by three rounds of back-to-back interviews with various team leads and project members. Whiteboard questions / technical definitions / previous projects and the like. The team was fantastic throughout the entire process, but at the end of the day, an offer was not extended to me. At every step in the process, they went above and beyond to make sure they were being thorough - and to be perfectly honest, I'd rather them get the decision right. Wonderful experience, and this is coming from someone that did not get an offer. 10/10 would interview again, haha.