The interview process was reasonably intense, a full day affair. The first half of the day was mostly one on one interviews with individuals in the role I was interviewing for. They asked fairly basic questions just to make sure you had a pulse. After lunch, someone from HR put me in a room for hours of pen and paper testing. One test was a series of questions where new features of an obscure language are introduced and then questions are asked that require one to integrate this new features with previously learned features. Additionally there was a sheet with 10 math problems and you have to solve as many as possible in 2 minutes. Finally there were 5 programming problems, that you have to write pseudocode to solve.