L.E.K. Consulting: who they are and what they value
Positioning, what they look for, case style, entry titles, and a preparation plan.
Firm processes and online tests change from year to year and differ by office. Use this to prepare, and confirm the exact current steps on the firm's own careers page.
Key takeaways
- Candidate accounts describe L.E.K. cases as candidate-led, fast, and number-heavy, often about markets and whether an investor should buy a company.
- Market and diligence structuring.
- Titles differ by country. Read the posting for your office.
- Practice fast market-sizing and market-growth math.
- Practice due-diligence cases: market size, growth, competition, and the target company's position.
What the firm is and how it describes itself
L.E.K. Consulting is a strategy firm known for commercial due diligence for private equity investors and for strong life sciences work (reported).
Candidate accounts describe two rounds: a first round of candidate-led cases, often one market-sizing case and one strategy case, and a final round with more cases and a written case.
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What it looks for in candidates
- Fast, accurate math
- Market and diligence structuring
- Commercial judgment
- Clear presentation of findings
Candidate accounts describe L.E.K. cases as candidate-led, fast, and number-heavy, often about markets and whether an investor should buy a company.
How it runs the fit or experience interview: Behavioral questions on motivation and fit, usually within the case interviews (reported).
Entry titles
- Titles differ by country. Read the posting for your office.
How to prepare for this firm
- Practice fast market-sizing and market-growth math.
- Practice due-diligence cases: market size, growth, competition, and the target company's position.
- Practice a written case: find the five or six facts that matter in a long pack and put them on a few slides.
- Prepare core fit answers.
Last reviewed: 2026-09-28. Sources, official pages first. "Reported" means a secondary source, not the firm or government itself.
- Reported: MyConsultingOffer, L.E.K. written case: https://www.myconsultingoffer.org/case-study-interview-prep/lek-written-case/
- Reported: RoadToOffer, L.E.K. case interview guide: https://www.roadtooffer.com/blog/lek-case-interview-guide
- Reported: Management Consulted, L.E.K. case interview: https://managementconsulted.com/lek-case-interview/
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