I applied online for a DC position, and had a first round phone interview. Immediately after the phone interview, I was told the DC position had been filled, but they wanted to consider me for other locations. I then had several more phone interviews for different locations, before going out to the Dallas office and having four in-person interviews. Was notified a week later about the outcome.

Three stages with three different people. They move pretty quickly which is nice. Typically all from the same department as well! They ask more thought provoking questions than job specific ones