When preparing for a case interview, especially under time constraints, working with an experienced coach can significantly enhance your chances of success.
💡 Pro Tip: PrepLounge offers access to over 800 (former) management consultants from top firms like McKinsey, BCG, and Bain, who are ready to help you perfect your interview technique.
What Are the Key Advantages of Practicing With a Coach?
Personalized Feedback
One of the primary benefits of working with a case coach is receiving tailored feedback. Unlike general preparation methods, a coach can pinpoint your specific weaknesses and provide actionable advice to improve. This personalized approach ensures that your preparation is efficient and targeted, addressing your unique needs and challenges.
Realistic Simulation
Practicing with a coach allows you to experience a realistic interview setting. Coaches who have conducted numerous case interviews can replicate the pressure and dynamics of a real interview, helping you become more comfortable and confident. This experience is invaluable, as it prepares you to handle the stress and spontaneity of actual interviews.
Insider Knowledge
Experienced coaches often come from prestigious consulting backgrounds themselves. Their insider knowledge about what top firms are looking for can give you a significant edge. They can share insights about the interview process, common pitfalls, and the specific attributes that firms value, ensuring that you are well-prepared to meet these expectations.
Structured Approach
A coach can help you develop a structured approach to solving case problems. This structured thinking is crucial in case interviews, where clear, logical, and well-organized answers are highly valued. Coaches can teach you frameworks and methodologies that streamline your problem-solving process, making your responses more coherent and compelling.
Time Efficiency
For candidates with limited preparation time, coaching is a highly efficient way to get ready. Coaches can quickly identify areas that need improvement, helping you focus your efforts where they are most needed. This targeted preparation can save you time and help you progress faster than you would on your own.
Confidence Boost
Confidence plays a crucial role in interview performance. Regular practice with a coach can boost your confidence by familiarizing you with the interview format and helping you refine your answers. Knowing that you have prepared thoroughly with expert guidance can significantly reduce anxiety and improve your overall performance.
How PrepLounge Optimally Supports You With a Wide Range of Coaching Options
🚀 Flexibility and Convenience
PrepLounge offers a variety of coaching options to fit your needs and preferences. You can choose from individual sessions, CV reviews, or comprehensive coaching packages that include multiple sessions or focus on specific topics. Additionally, there are programs available that combine a premium membership with coaching credits, providing a cost-effective way to access top-notch coaching services.
📅 Workshops and Online Events
PrepLounge also regularly hosts workshops and online events led by experienced coaches. These sessions cover a range of topics and provide opportunities for interactive learning and direct feedback. Participating in these events can further enhance your preparation and keep you updated on the latest trends and techniques in case interviews.
How to Find the Perfect Coach to Suit Your Needs
To find the perfect coach for your case interview preparation, you can proceed in three steps within the coach overview:
Filtering: Begin by filtering the coaches based on your most important criteria, such as price per coaching session, or employer.
Selection: Choose up to 10 coaches whose profiles, ratings, Q&A contributions, and PrepLounge awards you wish to explore further.
Contacting: Reach out to 2-3 coaches to address any potential questions or concerns about their coaching approach. Feel free to ask if they offer a free intro call.
What Makes a Good Coach?
Good coaches are characterized by the following features:
Customization: they tailor the coaching to your specific needs.
Good rapport: They make you feel comfortable and work well with them.
Transparency: They offer you full transparency about the coaching process on PrepLounge.
Final Thoughts on Working With a Coach
Practicing with a coach is a strategic investment in your case interview preparation. The personalized feedback, realistic simulation, insider knowledge, and confidence boost that coaches provide can make a significant difference in your performance. With the expert guidance available on PrepLounge, you can ensure that you are thoroughly prepared and ready to excel in your case interviews.
By leveraging the expertise of experienced case coaches and taking advantage of the diverse coaching options and events available on PrepLounge, you can maximize your preparation efficiency, build your confidence, and increase your chances of securing a position at a top consulting firm.
Big 4 M&A to London MBB: Optimizing the LBS MBA Timeline (2 vs. 4 Years Exp)
6 min
< 100
4
Best answer by
Tommaso
Hi Anonymous, thanks for the question!Speaking from what I've seen with many MBA applications to MBB (both in the US and the UK), here is the reality of your situation: The "2 vs. 3 Years" Dilemma: From a recruiting standpoint, the difference between two and three years of Big 4 experience is very minimal. You are risking over-optimizing a detail that won't really move the needle for MBB recruiters. Seniority and Leveling: Everyone generally starts at the standard post-MBA level (Associate at McKinsey, Consultant at BCG/Bain). I have almost never seen anyone enter at a higher role post-MBA unless they are an experienced hire in a highly critical sector facing a talent shortage—and those candidates usually bring 8+ years of experience to the table. What Actually Moves the Needle: If you want to stand out for PE/M&A practices, what would make a massive difference is landing a role at a Private Equity fund. I know it's incredibly difficult, but even just one year (or a pre-MBA internship in PE) adds immense value. Very few candidates have actual pre-MBA PE experience, so this would make your CV genuinely differentiated. A Candid Reality Check: I'll close with a note of caution. I know many people who have tried to make the exact switch from Big 4 to MBB via an MBA, and realistically, few succeeded. The competition is fierce, and Big 4 profiles aren't always seen as highly differentiated when stacked against candidates with deep, specific industry expertise (e.g., 5 years in specialized engineering, a former PM at Google, or someone with a heavy industrial background).An MBA absolutely gives you a shot, but I highly recommend verifying the conversion rates. Spend some time on LinkedIn searching for people who have successfully made this specific Big 4 -> LBS -> MBB transition. From my experience, it's a tough pivot, so you want to go in with your eyes wide open and a clear strategy to stand out. Best of luck!
Has anyone noticed consulting firms being hesitant to consider candidates due to potential future visa requirements?
14 min
< 100
3
Best answer by
Tommaso
Hi, Overall, this sentiment is fairly widespread across most industries in the US right now, so you're not alone in noticing it. I am assuming you are referring to the US, since I have not seen or heard changes across Asia and Europe That said, from what I've seen in the US, the larger consulting firms (MBB and Big 4) have continued interviewing and hiring international candidates at a fairly consistent rate. They tend to have the infrastructure and experience to manage the complexity that comes with work authorization. For smaller firms, there does seem to be a growing trend toward "simplification" -- they're often less equipped to handle uncertainty, so they may shy away from candidates whose situations require more planning ahead. It's less about you and more about their own limitations. Good luck with your search! Tom
This is a hidden "weakness" question. Find a weakness that isn't really one, and also explain why it isn't even really an issue anymore.
Additionally, you can pick something that is a weakness elsewhere, but not at weakness at consulting firms. E.G. "I question/challenge common beliefs/assumptions. This wasn't viewed positively at my old firm"
Mckinsey Quantum Black SWE Virtual Problem Solving Case + Personal Experience Interview
11 hrs
< 100
1
Best answer by
Alessa
hey there :) congrats on passing the pair programming round :) for the next step in QB SWE track, it’s usually not a traditional business case. the “Virtual Problem Solving Case” is more like a mix of light system design + applied coding thinking, often framed around real product or data problems. think questions like how you would design a simple end to end feature, structure data flow, or improve a basic system, rather than consulting-style profitability cases. the “system design” part is typically entry level, so they are not expecting deep architecture knowledge, more clarity on how you break down requirements, data handling, APIs, scalability basics, and trade offs at a high level. the “Personal Experience Interview” is more behavioral, focused on how you work in teams, handle ambiguity, and your motivation for engineering in consulting, so be ready with structured STAR stories. overall it’s still quite practical and problem solving focused, just more technical-context driven than business case driven. best, Alessa :)
How to approach ambiguous multiple-choice questions (MCQs) questions in BCG Case Chatbot?
11 hrs
< 100
4
Best answer by
Tommaso
Hey, Let me be super-honest with you: I spoke about this with a few MBA friends who now work at BCG and they told me that they don't love the chatbot either, so you are not alone in complaining :) What I would do is trying to write down the clear logic link between the different risks and the investment. Here: Regulatory risk: if the regulator limits this ex-post (e.g., up to a certain market share, or limiting usage), the value of the investment is likely to be reduced. Very clear link -- good! Can we falsify this? If regulators set limitations, our investment is not likely to be reduced. I can't -- this confirm my selection Interdependency risk: if the other operator changes their strategy, exits a specific geographical market, etc., the investment is likely to lose value (or, I might have to cover more OPEX). Very clear link -- good! Can we falsify this? If the other operatore changes their strategy, our investment is likely not to be reduced. Well, it technically can, but I really have to find edge cases to falsify the hypothesis (e.g., we have more 5G supply for our clients and we can monetize this) -- I would keep it Risk that one company may not want to continue investing due to lower calculated profitability: this feels very similar to the interdependency risk. Very clear link (as above) and hard to falsify -- same as above Decline in phone sales market: What matters is the evolution of the demand of 5G, that does not logically require phone sales to grow. Weaker link -- I would not select this! Can we falsify this? If the phone sales decline (e.g., people do not buy iPhone 18 but stick to 17), the 5G usage is not directly impacted. I say yes -- so I would confirm the 'no selection'. Again: overall, I agree with you on how this exercise can not be treated deterministically (i.e., prompt x always and only leads to y in any case and with any realistic assumption). However, I still think that the idea of writing down the relationship and trying to falsify it might help :) Best, Tom
Hello! My suggestion is: keep messages brief, find a connection (same city, university, or an article they wrote), explain why you are interested in their firm/work, and don't ask for the referral upfront in a way that might be perceived as too direct (e.g., "Hey! I need a referral for your firm ..."). Don't worry, consultants know the game and will help if there's genuine interest :) FYI: for junior applicants, a referral simply means an insider saying, "I trust this person; they deserve an interview." However, seniority matters: a Senior Partner referral practically guarantees an interview unless your CV has red flags. Best! TomPS: Coffee chat culture (i.e., connecting to discuss your interest in working at someone's company) varies globally. It's generally harder in Southern Europe and MENA, but much more common in Northern Europe and the US, which will impact your response rate.
What are the best tools to practice consulting maths?
14 hrs
23.6k
10
Best answer by
Hi there, Because you already have great answers on the types of tricks you can use to do mental math, I will focus my response on tools and resources available: Mobile Apps: Mathemagics: focuses on teaching mental math tricks and techniques. Mental Math Master: exercises to improve speed and accuracy. Elevate: a range of brain training exercises, goes beyond math, but includes math skills. Websites: Khan Academy: there are lessons to solve big additions in your head and identify patterns in numbers. Mathway: not the nicest user interface, but it breaks down calculations step-by-step, often with simplification steps you can use during case studies. Mental Math Trainer: again, not greatest user interface, and also doesn't give step-by-step solutions, but it generates sets of problems for you to practice. Books: "Secrets of Mental Math" by Arthur Benjamin and Michael Shermer "The Trachtenberg Speed System of Basic Mathematics" by Jakow Trachtenberg GMAT Quant prep books YouTube Channels: Numberphile: wide range of math topics, look for the number tricks videos. Math Antics: also wide range, look for the multi-digit addiction, substraction, etc. MindYourDecisions: look for the videos that are labeled with something such as “x% of people don't know this math secret”, also has brain teasers and problems used by companies (e.g., Amazon) to hire Best of luck!
First off, congrats on the call! Here is my suggestions: For the Intro use the "Present-Past-Future" Model and keep it under 90 seconds. Present: Who you are right now (e.g., "I'm a final-year student at X studying Y...") Past: One or two "hero" moments from your internships or projects that show you're good with data or solving messy problems. Future: Why you are transitioning into consulting specifically with them. The goal is to show that your background makes you a "low-risk" hire who can handle the work. For the "Why Consulting", since Argon & Co specializes in operations and transformation, a generic "I like variety" answer /typical for MBBs interviews) won't cut it, frame your interest around "Tangible Impact" and "Efficiency." Structure it with two pillars: Mention that you are interested in how businesses actually function and improve their core operations Since the local office is small, tell them you’re excited about the entrepreneurial environment where you can take on more responsibility early on. Hope this helps, Franco
In which geography? And regardless, it doesn't mean that if they've sent some, they've sent all of them. Typically, after you apply, it takes a few weeks, maybe a month, until there's an answer. If more has passed and you're not sure what to make of it, follow up politely with the interviewer to find out. Best, Cristian
Questions about market size are frequently asked in case interviews in consulting because they require a blend of logic, mathematics, and common sense. They can be asked as standalone questions or as part of a larger case. Applicants who are familiar with market sizing questions can really perform here.
Market entry cases are one of the key issues in the consulting industry and present consultants and firms with unique challenges and opportunities. These cases require deep analysis and strategic planning to successfully enter new markets.
Brainteasers are a type of problem that focuses on a single issue rather than complex business cases. They require out-of-the-box thinking, logic or math skills and can take the form of riddles, word problems or visual puzzles. These tasks are designed to test your problem-solving skills, analytical thinking and ability to remain calm under pressure.Typical problems cover everyday life's topics and might even include unrealistic assumptions. All necessary information is usually included in the question so that further assumptions are not necessary. This article explains in more detail why brainteasers are useful in case interview preparation and how to solve them.