Overall, the interview process took about a month. After I sent in my application, I heard back from a recruiter within a week and scheduled a phone interview for the following week. After our twenty minute phone conversation, I was contacted once again (from a different recruiter) who scheduled my in-person interview at the Denver headquarters. During that interview I was interviewed one-on-one by three different people in the department, for thirty minutes each. The questions asked were pretty standard interview questions, which I had previously prepared for.