Found Protiviti at my college job fair. Dropped off my resume with them. Was invited to interview on campus, interviewed with a senior manager at the firm. Passed the interview and was invited for an office visit. Invited for a 2nd round with a Managing Director, passed and got to do an office visit for culture fit. Overall everyone was really nice, they are testing to see that you are driven, and as all behavioral interviews to see what you've done in the past to see if you fit at Protiviti.

Started off with campus recruiting - case study which wasn't too hard but wasn't a walk in the park either, and also a behavioral interview as well. Then second round in the office there were 2 interviews. Both were just casual conversations so they could get to know you. Some random behavioral questions were thrown in, but they were more integrated into the conversation so they weren't stressful. Then there is a group presentation you give.