Question About ZS Round 1 Structured Case Interview (Consultant)

Question

For the ZS Round 1 structured case, could you share a little more about what the interviewers will be evaluating? I understand that I should walk the interviewer through my thought process, interpret charts and data quickly, identify key insights, and tie my recommendations back to the data presented.

Is the format similar to a traditional MBB-style case interview, where candidates are expected to structure the problem, perform quantitative analysis, develop insights, and provide a final recommendation, or is the ZS structured case more focused on interpreting the exhibits and answering a predefined series of questions?

Also, since I’m interviewing for the Life Sciences Commercial Strategy Consultant role in San Francisco, should I expect the case to focus on life sciences/commercial strategy, or could it cover a business problem from any industry?

Answer 1

Hi there,

The ZS structured case will be closer to McKinsey's interviewer-led format than to BCG or Bain, where the case is candidate-led. The set of skills they test is fairly well defined:

structuring your reasoning and explaining it clearly to your counterpart;
asking questions that help you narrow down your structure;
making the comparison parameters on exhibits explicit (what vs. what, over which period, in which units);
prioritizing every step against the main question of the case. Many candidates forget this one.

The main evaluation criteria: stay goal- and hypothesis-driven throughout, be clear about your approach to each question, adjust that approach when the data tells you to, communicate clearly, and be accurate.

For Life Sciences, I'd make sure you know the main players and how they compare, understand their business models, and read what consulting firms publish on industry trends.

For ZS and the SF office specifically, look at how they use AI in their practice and which tech tools they prioritize. The ZS website and LinkedIn profiles of their people are the best sources.

Good luck!

Best,
Boris

Answer 2

You're mostly thinking about this correctly :)

A structured case is still a case interview. It doesn't mean you're just being tested on whether you can read an exhibit.

Generally, “structured” means there is a clearer path through the case and the interviewer is more likely to guide you through a series of questions.

You still need to be able to:

Structure the initial problem
Interpret charts / exhibits
Do the math
Pull out the important insights
Explain what those insights actually mean for the client
Synthesize everything into a recommendation
Respond to guidance and adjust your thinking

So I'd think of it as more structured / interviewer-led than a fully candidate-led MBB case, but the underlying skills are essentially the same.

On Life Sciences: given the role, absolutely build up your Life Sciences / commercial strategy knowledge. But don't assume every case must be Life Sciences.

Be ready for any industry.

The whole point is demonstrating that you can take an unfamiliar business problem, understand it quickly and solve it logically.

A few things I'd use to prepare:

Answer 3

hi!

The ZS structured case is generally more guided than a traditional MBB case. You’ll often work through a series of predefined questions and exhibits, so interpreting data, identifying key insights and explaining your reasoning clearly are particularly important. You should still be prepared to structure your thinking, do calculations and connect your findings to a recommendation.

For a Life Sciences Commercial Strategy role, I’d expect healthcare or pharma related topics to be relevant, such as market sizing, product launches or commercial strategy. I’d still prepare general business case skills, as the exact format can vary by interviewer and office.

Best, Alessa :)

Answer 4

The format answers above are right: the structured round is more guided, and you still need to structure, read exhibits, and land a recommendation as always.

Two life-sciences specifics:

1. Know the ZS-native case. ZS built its name on sales force effectiveness, so be ready to size a sales team, segment and target physicians, or talk incentive comp. The move that separates strong answers is prescriber concentration. Prescribing is heavily skewed, so work out how many doctors write 50, 60, 70 and 80% of the volume, and size the force around the deciles that matter. Then turn target coverage into calls, reps and headcount, and say how you'd know it's working.

2. Practice the written piece now. Later rounds add a written case presentation, a take-home for most non-analyst tracks (confirm with your recruiter). Practice turning any worked case into three slides: answer first, then two slides of support.

If the exhibits show a pharma market, present it in commercial terms first (patients, prescribers, share, net price), and then the math gets easier.

Answer 5

Hi there,

Re your last question - I suggest you reach out to the recruiter to clarify whether the cases will be from only a specific industry or not. They are the only ones who will be able to say that for sure and it will make a big difference then in how you tailor your preparation.

Best,
Cristian

Answer 6

Treat this as a guided case. It is not a silent chart quiz, and it is not always a fully open MBB interview either. In a structured ZS round the interviewer often walks you through exhibits and a series of questions. You still need a structure before you calculate, because they are listening for whether you know which question the chart answers.

For a Life Sciences commercial seat in San Francisco, a pharma or commercial prompt is the sensible bet: a product, a customer, access, and competitors. I would still prepare for a general business problem. Interviewers reuse cases across roles, and I don't have the script for your round.

Practise reading a chart out loud in under a minute, stating the insight, and tying the recommendation to that figure. If you can do that cleanly, the label on the round matters less on the day.