Spoke to a software engineer recruiting during a career fair at my campus and was called for a 30 min on-campus interview the next day. The interviewer is quite friendly and down to earth. After that, I was called for an onsite interview at their Chicago headquarters. I spent the night before the onsite interview interacting with the team during dinner. The onsite interview consisted of 3 1:1 interviews and a group interview. Throughout the entire day, we (the candidates) were treated well and they were eager to clarify any doubts we had about the company. As this is a company that uses Rails for its software stack, expect questions on reading and understanding Ruby. Granted you may not know Ruby, it is easy to read if you have reached a certain proficiency in programming. Also expect to be asked software design questions. The group interview was the last part of the day and it was also the most interesting. My impression of the company is that it has a flat management and a working environment that promotes collaboration. Despite that the company is now 700+ employees and growing, I still had a little of that startup feel, which is a good thing.