The interview process took a long time, but was very thorough and involved. They are really looking for someone who is the right fit. There was a phone interview to start that was more involved than most phone interviews. Takes about 20-30min. Then in-person interview about a month later. Interviewed with four people total, two people at a time. One would ask questions while the other took notes and then they switched. There was also a short logic/math quiz at the beginning of the interview. Questions are pretty common but they are definitely looking for examples from past job experience.