They use an interview process like the one at topgrading.com meant to get into your head and find out a lot about what you learned from one job to the next and why you made certain decisions. They want to know about your highs and lows at each job and what your relationship was like with each supervisor. It takes a long to time apply for a job there and you will have a couple of phone interviews followed by 3-5 in-person interviews all in one day or two. It's a bit draining but seems to work for them since the company is so small.