Cornerstone Research Business Analyst interview experience

No offer

Hard

Positive

Chicago, ILPosted Feb 2025 · Candidate report, summarized by Dataford

My process hit me as soon as the first round started: I had two back-to-back interviews where the early minutes were briefly behavioral, and then the bulk of each session turned into interviewer-led case questions.

The cases were built from real kinds of work, and they felt like economics-style consulting prompts—facts presented to me, then a sequence of follow-ups that required me to keep the thread and update my conclusions as new details came in.

In the tougher interviews, there were times I had to do simple math and stay sharp with statistics intuition, but the main challenge was mental pacing. They often split the case up across interviewers, with questions that built off one another, so if I drifted or misread something early, it snowballed. One of the moments I remember most was having to think

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