A first short interview (about 30 min) with two interviewers, then if successful a longer (about 2 hours) a week or so later for a more technical interview, still with two different interviewers.

C++ knowledge, design patterns, good software development habits, approaches to teamwork problems, etc. Was shown code and asked to identify problems, was also given a scenario and asked how I would design it from a high level OOP standpoint.