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McKinsey

Large Enterprises

McKinsey & Company is a global management consulting firm that advises businesses, governments, and other organizations on strategy, operations, and organizational matters. It is one of the world's most prestigious consultancies, part of the 'Big Three' alongside BCG and Bain.

2 interview notes · updated Jul 2026

McKinsey·Software Engineer·Onsite - Product Sense / Strategy

Jun 2026
McKinsey data science interview with a classic consulting case framing. One question, profit decline scenario, felt more like a business analyst screen than anything technical.
  • A client's profits have dropped by 20%. How do you approach diagnosing and addressing this?

“I went straight to revenue vs cost decomposition which felt right, but I spent too long on the revenue side and kind of glossed over margin compression.”

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McKinsey·Software Engineer·Technical Phone Screen

Apr 2026
Interviewed for a data science role at McKinsey. One question but it was the kind that sounds deceptively basic until you're actually sitting there trying to justify your answer.
  • In what situations would you use the median rather than the mean as a measure of central tendency?

“I started with the skewed distributions angle (income, housing prices) which is the obvious answer, and they nodded along.”

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