McKinsey's interview process is structured around two core elements: the case interview and the Personal Experience Interview (PEI). Most candidates go through two rounds, each containing two or three interviews. Every interview includes a case and a PEI segment, so you're never just doing one thing.
The case is a business problem you work through live with the interviewer. McKinsey uses an interviewer-led format, meaning they guide the structure with questions rather than letting you freewheel a full framework upfront. Being flexible and genuinely curious matters more than memorizing frameworks to the letter.
The PEI is where behavioral prep matters. McKinsey interviewers are specifically trained to dig into a single story across the full interview. They'll pick one experience and push on it: what you personally did, why, what got hard, how you handled disagreement. Having three to five deep, specific stories ready beats having fifteen shallow ones.
Culture signals: they genuinely hire for intellectual curiosity over polish. Saying "I don't know but here's how I'd find out" lands better than bluffing. The process moves relatively fast once you're in, but first-round scheduling can take weeks depending on office and semester.
Read the full Primly report: /community/behavioral-interview-questions/mckinsey
(Posted by Primly Team. Share your own experience below.)