L.E.K. Consulting Interview Questions
& Process
Real candidates share what happened, how many rounds they had,
and how the experience turned out.
Based on 799 interview experiences · FREE TO READ
Which role are you interviewing for?
27 roles · 799 reportsCandidate interview experiences
First-hand accounts from people who interviewed at L.E.K. Consulting.
L.E.K. Consulting
Consultant
Entry Difficult Positive experience No offer 2 rounds
Interview process
Recruiter call Onsite
Interview formats
Case Behavioral
The process involved two rounds of interviews. Round 1 had two 45-minute interviews, focusing on case and behavioral questions, typical for consulting case interviews. Round 2 consisted of three 45-minute cases, including a standard case, an executive summary case, and a work planning activity. These cases were varied and presented their own unique challenges.
Confirmed questions6 questions
- Tell me about an impactful experience you've had.
- Can you share another example of when you made a significant impact?
- Describe a situation where you drove a considerable impact.
L.E.K. Consulting
Consulting Intern
Intern Difficult Positive experience Accept offer 4 rounds
Interview process
Recruiter call Technical screen Onsite Presentation
Interview formats
Case Behavioral Presentation
Super quick process, wrapped up in about 2-3 weeks. Started with a call with HR, then two back-to-back interviews with consultants, and finished with an interview with a Partner. The interviews focused on classic consulting case questions, including both fit and a case study.
Confirmed questions6 questions
- How do you handle personal fit questions and a case study on cost reduction?
- Tell me about yourself and a case study on cost reduction.
- Can you walk me through your experience, and we'll do a case study on cost reduction?
L.E.K. Consulting
Data Scientist
Entry Average Negative experience No offer 1 round
Interview process
Technical screen
Interview formats
Technical
Submitted CV and cover letter. First round was a numerical reasoning test, GMAT style questions including Data Sufficiency. It was mostly irrelevant to Data Science concepts. Felt insulting preparing for a test not used in standard DS processes. Administered through Zoom with ID check. Only one slot, which was rescheduled due to client commitments despite being proctored by HR. Few applicants in the Zoom session, so using leetcode or ML questions would have been possible. Signals the firm isn't serious about Data Science, especially after asking for MSCs in Stats/Data Science. Job reposted a week after the test, and forums suggest candidates were rejected for low scores compared to a sample population. Assume they didn't find suitable candidates, comparing Data Scientists to general consulting candidates who are more familiar with numerical reasoning tests. There's irony in not blocking tests by candidate type, a fundamental statistical error. Withdrew due to the circus of the first stage and dehumanizing ID check, worse than Jane Street's system. Prep can be a time sink for more meaningful opportunities.
Confirmed questions1 question
- GMAT Maths questions, including Data Sufficiency.
L.E.K. Consulting
Associate
Entry Average Positive experience No offer 3 rounds
Interview process
Recruiter call Technical screen Onsite
Interview formats
Behavioral Case Group
It's usually 3 rounds. Round 1 is HR, asking about your interest in consulting, why not finance, and specifically why LEK. They'll also ask about company culture and your fit. It ends with a 5-min guesstimate. Round 2 is more HR and case solving, but the cases aren't standard like profitability or market entry, they're different. This one's 30-45 mins. The last round is all about whether you're workable for the company. If you don't mess up badly, you'll likely get an offer.
Confirmed questions1 question
- Estimate the number of popcorns sold in 10 theaters across NY, LA, Miami, and California.
L.E.K. Consulting Interview Questions
Quoted word for word from L.E.K. Consulting interview reports.
“How would you go about calculating the circumference of a planet that is not Earth?”
Read reports →“What's the angle between the hour and minute hands at 3:15?”
Read reports →“Regarding market size, what is the estimated size for two treatments in the US?”
Read reports →“What are the growth strategies for an ophthalmologist player in France, and what is the market size?”
Read reports →“Which two US cities would you pick to build a high-speed rail line?”
Read report →“What is the revenue potential of a plot of land if used as a car park compared to being used for a block of flats?”
Read report →“What would be a business case for a luxury car brand to enter the UK's EV market?”
Read report →“What was the percentage increase from year 1 to year 2?”
Read report →“Given pricing details and some volume data, how would you determine the total market size?”
Read report →Formats, difficulty and experience
Across all 799 L.E.K. Consulting interview reports.