Switching careers: why leave, and how to turn industry depth into case strength
Answer the "why leave a good career" question with a pull, not a push, and use what you know about an industry without letting it take over the case.
Key takeaways
- Give a pull toward consulting, not a push away from your job. Then show that your depth makes you faster at cases, not narrower.
- The strong answer shows a result, a pull toward the work itself, what the candidate brings and why this firm.
- Sounding like you already know the answer: Experienced candidates sometimes open with the solution they have seen work before.
If you already have a career in engineering, medicine, law, the military, government or industry, interviewers will ask some version of one question: why would someone doing well where they are move to consulting now? Candidates and coaches on public forums say the bar for experienced hires is higher and that fewer mistakes are allowed (reported). There is also a helpful trend: a July 2026 report on MBA hiring says the largest firms now favour candidates with specialist backgrounds (reported).
Key idea
Give a pull toward consulting, not a push away from your job. Then show that your depth makes you faster at cases, not narrower.
Answering "why leave, and why now"
A 60-second answer in four parts
- 1What you did and what it taught you, in one sentence with a result.
- 2The moment that pulled you: a project where you saw a problem across the whole business, not only your part of it.
- 3Why now: what you have that is ready to use (the depth), and what you want to learn that your current role cannot give you.
- 4Why this firm: one specific practice, office or piece of work, not a general compliment.
"You are a successful process engineer. Why consulting?"
Weaker answer
"My job has become repetitive, promotions are slow, and consulting pays better and looks good on a CV."
Stronger answer
"I led a line upgrade that cut scrap by a third, and the hardest part was not the engineering, it was getting purchasing and sales to agree on the trade-offs. I want to work on those whole-business questions every day. I know how plants actually run, and I want to learn how to shape the strategy around them. Your operations practice is where those meet."
Why the stronger answer wins: The strong answer shows a result, a pull toward the work itself, what the candidate brings and why this firm. The weak one is only about leaving, and it tells the interviewer the candidate may leave consulting for the same reasons.
Turning industry depth into case strength
- Use your knowledge to sanity-check numbers: "In the plants I know, labour is about a fifth of cost, so this figure looks high; can I check it?" Say it as a question, and say where your number comes from.
- Use it to build a sharper hypothesis early, then test it like anyone else. Depth that skips the structure reads as bias.
- Translate jargon. Explain a term once, in plain words, as you would to a client from another department.
- Do not argue with the case facts. Interview cases simplify on purpose; if a fact looks wrong, note it and work with it.
- Practise cases outside your industry at least half the time. Interviewers often choose an unfamiliar sector on purpose.
Experienced candidates sometimes open with the solution they have seen work before. Structure first, even when you are confident, and let the data confirm your view. It shows the process the firm will trust you to run with clients.
Stories to prepare
- A time you led people who did not report to you.
- A time you changed a senior person's mind with data.
- A time you worked outside your specialism and learned fast.
- A mistake you owned and what you changed afterwards.
A candidate with ten years in retail banking gets a bank profitability case. What is the best use of that experience?
For how the process, level and pay differ for experienced hires, see the module on experienced hires, PhDs and other advanced degrees in this part of the foundation.
Last reviewed: 2026-09-30. Sources, official pages first. "Reported" means a secondary source, not the firm, school or government itself.
- Reported: Poets&Quants, the MBB are hiring different MBAs, not fewer (1 July 2026): https://poetsandquants.com/2026/07/01/the-mbb-arent-hiring-fewer-mbas-theyre-hiring-different-ones/
- Reported (candidate forum): PrepLounge consulting forum, experienced consultant case interview: https://www.preplounge.com/en/consulting-forum/experienced-consultant-case-interview-4099
- Reported (candidate forum): PrepLounge consulting forum, upper age limit for experienced hires (read from a search snippet, unverified): https://www.preplounge.com/consulting-forum/is-there-an-upper-age-limit-for-experienced-hires-at-mbb-17572
Sources for this lesson (3)
- Reported: Poets&Quants, the MBB are hiring different MBAs, not fewer (1 July 2026)
- Reported (candidate forum): PrepLounge consulting forum, experienced consultant case interview
- Reported (candidate forum): PrepLounge consulting forum, upper age limit for experienced hires (read from a search snippet, unverified)
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