McKinsey & Company Interview Questions, Process, and Tips

This aptitude + technical MCQ test was of 120 minutes in duration. Had MCQs on quantitative ability, logical ability, Language, and technical MCQs consisted of questions on DBMS, OS, Networks, DSA. There were two coding questions as well. One on Bit Manipulating, and the other on DFS.

Q1. A question on BFS very similar to Leetcode 924. Was given one hour to discuss and come to an optimized solution with the interviewer.
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Q1. Search an element in a sorted and rotated array
Ans. 
Search an element in a sorted and rotated array
• Find the pivot point where the array is rotated

• Divide the array into two sub-arrays based on pivot point

• Perform binary search on the appropriate sub-array
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Q2. SQL query on left join
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Q3. Questions on CPP memory management
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Q4. Questions related to projects done
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Q1. Propose a system for a popular media stream service
Ans. 
Proposed system for a popular media stream service
• Implement a recommendation engine to suggest content based on user preferences and viewing history

• Integrate with social media platforms to allow users to share and discuss content

• Provide multiple subscription options with varying levels of access and features

• Ensure high-quality streaming with minimal buffering through the use of content delivery networks

• Implement robust...read more
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Q2. Questions related to Fullstack Tech Stacks
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Guesstimate on number of Reddit users in India. No starting input was given. Gave solution by using bottom to top approach. Tried to focus on quantifying teenagers with internet access and a particular interest about internet. Gave a figure around ~1 million in a year.

Q1. Where do you see yourself at McKinsey?
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Aptitude - verbal, quant, reasoning

Q1. Walk me through balance sheet
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Q1. Tell me about a time you had to deal with multiple stakeholders
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Q1. How do you feel, what is your take on the session McKinsey organized?
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How can a paints company expand: company operates in 3 segments Mass, Middle, Premium? Should the company expand in mass?
I covered the growth framework wherein I suggested that we could increase current product, expand the market, develop new product, diversify through forward and backward integration.

I did lot of data crunching in the middle.

I finally concluded that company should not expand in mass as it is dominated by niche players, and they have strong distribution channels. It would be difficult to compete with and would hamper the brand image of the company.

2 back to back rounds on generic consulting case study types, ie profit and revenue issues for a company etc.

4 interviews in total. each interview consisted of one case study and one PEI question

Q1. Customer service delivery related
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Q2. How you will handle a disappointed client for not delivering agreed task?
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Q3. Strength and weakness definition
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Q4. Why you are interested to join the firm?
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Q5. Tell about your last job responsibilities?
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Q6. How long are you planning to stay if you are selected?
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Q7. Ask if there are any questions that you have?
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Q8. Tell me a situation that you shown the leadership quality?
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Q9. Select and define about something that you achieved with hardworking?
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Q10. What you do first with handling a irritated customer, how you provide a good service?
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