I applied online and was contacted a week later by a recruiter. We set up an initial phone screen with one of the managers. This had it's fair share of technical questions, much of it related to object oriented programming. Feedback from that was positive, so I got an onsite interview 2 weeks later. The main portion of this was sitting down with a manager and 2 programmers to answer questions about a wide range of technical topics. It was heavy in OOP, but threaded applications, networking, and design patterns were also mentioned. Expect to have to code one or two things on the whiteboard. Then there were a couple 1 on 1s with managers. These had almost no technical questions and were more behavioral

Two interviews in total. The first interview was over the second was in person at their site in Fulton, MD. The on-site interview was with 3 employees and 1 manager. Both interviews were technical in nature, but the first was was more difficult than the second I felt like. The phone interview was a bunch of technical questions about data structures, etc, and the in person interview was more technical questions on a white board, solving problems, etc.