Had my resume sent through a friend and got an email from HR. Conducted two phone interviews and after passing those was invited to their headquarters for a final round. The final round consisted of a 2-on-1 interview with the two head recruiters, a group interview with all of the candidates working together to solve problems, a tour of the office, and desk rotations to learn more about SIG and its culture. There was also a pretty informal dinner the night after the interview.