Case interview for EY Supply Chain

Read about their practice. This is a technical interview, not a "case interview". You have to become aware of the type of problems they face and try to solve. And have to be able to discuss those types of problems.

Also, check on Glassdoor about the questions people get for that role.

A 90-minute case, especially for a sector-specific practice like Supply Chain & Operations, signals a deep dive. This is not going to be a quick Market Entry or Profitability case. They are looking to see if you can handle high data volume, structure ambiguous operational messes, and speak the language of logistics.

Here is the reality check for S&O preparation: standard MBB prep (profit trees, general growth strategy) is necessary but insufficient. You must pivot your focus. Your primary goal is to demonstrate fluency with key operational drivers. The case will almost certainly revolve around optimizing one of the core levers—Source, Make, or Deliver. Focus your structure around the SCOR model (Plan, Source, Make, Deliver, Return). When you structure the problem, don't just say "Costs." Break it down into transportation costs, inventory carrying costs, and labor utilization.

Do not waste time looking for proprietary "past EY cases"—they are rarely public and not worth the effort. Instead, shift your practice to real-world operational problems. Work through cases that deal with warehousing optimization, inventory management (e.g., how much safety stock is needed to meet a 98% service level), or network redesign (e.g., deciding where to place a new distribution center based on population density and transport cost). Know your metrics: Inventory Turns, DSI, and On-Time/In-Full (OTIF) delivery. If you can confidently use those specific metrics in your analysis and recommendations, you immediately signal to the interviewer that you are ready for this team.

All the best with the interview!

Hi,

While there is of course an importance of getting familiar with supply chain concepts, I would still urge you to focus on developing the right fundamentals around the core skills that all consulting firms are looking for 

• Structured thinking
• Analytical / critical thinking
• Quantitative reasoning
• Business judgment 

Plenty of great resources on the above in Preplounge if you do a search. 

All the best!

That's a huge question :) The entire platform is about this. 

I'll add here a few materials that might help. Feel free to reach out if you'd also like extra help:

• Expert Guide: Mastering Structuring & Brainstorming
• Cheatsheet: The Must-Know Consulting Terms for Interviews

Best,
Cristian