1st phone interview with a manager, some basic resume questions and a simple case. 2nd phone interview with another manager, again going over resume and a quick brain teaser. Then there is a whole day of onsite interviews, where you get to meet some consultants from GEP, have formal/informal Q&A sessions, and interviews back to back. The first interview I had was a group case interview with other potential hires. Then there were multiple interviews (behavioral, case, brain teasers) with consultants, managers, and finally someone from HR. The process is geared towards understanding how you think, rather than trying to make you feel stressed out about getting to a specific answer. Everyone I met along the way was great -- they were really attentive, friendly, and welcoming. The turnaround for all emails and responses were super quick. Also a great company with an amazing outlook of business. Definitely recommend to anyone who wants to go into consulting, but in a more specialized field!