By Florian Smeritschnig, former McKinsey Senior Consultant · Last updated July 8, 2026 Every candidate walks into a case interview terrified that one wrong number will cost them the offer. So they freeze, chase a flawless run, and make worse mistakes than the ones they feared. After my time at McKinsey and delivering 2,200+ mock…
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By Florian Smeritschnig, former McKinsey Senior Consultant · Updated June 2026 Case interview math is fifth-to-seventh-grade arithmetic plus about 15 business formulas, done out loud, under time pressure, with no calculator. The hard part is not the math; it is performing it while you also structure the problem, narrate your logic, and stay composed. What…
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Florian spent five years at McKinsey as a Senior Consultant and is a highly experienced consulting interviewer and problem-solving coach. Having conducted interviews with hundreds of candidates, he understands exactly what top-tier firms look for in successful applicants.
He founded StrategyCase.com to make top consulting careers more accessible by providing tailored, up-to-date insights into the recruiting process. Recognized as the most successful case and fit interview coach, Florian has helped his clients secure 700+ offers at MBB, Tier-2 firms, Big 4 consulting divisions, in-house consultancies, and boutique firms over the past four years.
He is the author of “The 1%: Conquer Your Consulting Case Interview,” “The 1%: Case Interview Workbook,” and “Consulting Career Secrets”, all available on Amazon.
