I applied through university. The process took 2 days. I interviewed at PJT Partners (New York, NY) in Sept 2017
Interview
There were 5 interviews, each one was 30 mins - 2 purely fit, 3 mixed fit and technical. Everyone was friendly but the technical questions were more difficult than the 400 IB review questions.
Interview questions [1]
Question 1
3 cash flow statements with positive or negative cash flows for operating, investing, financing - then asked questions comparing statements
First round into superday. First round typical questions. Superday is 4 back to back interviews testing market logic, technicals, and behaviorals. The people are nice and will help you with answers if stuck.
Did First Round - Interviewer was extremely nice. Difficult technicals, much harder than most other first-round interviews. 45 minutes interview (15m behavioral, 25m technical). Overall good experience, didn't receive market questions, all technicals had math.
Started off with a CV review, then had to do a suit assessment, then applicants were selected for the first round video interview and if you pass that, you would get to the final stage AC.