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McKinsey & Company Interview Questions

The questions to prepare for McKinsey & Company interviews, across all roles. Questions from real interview reports rank first. Updated weekly.

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1
System DesignStart here. 5 questions · ~40 min
Design a URL Shortening ServiceHard

Design a URL shortening service that routes, ranks, and monitors links at scale.

Feature StoreModel ServingMcKinsey & Company
Consistency During Network PartitionsHard

Tests your understanding of distributed consistency models and partition tolerance strategies.

Networkingdistributed systemsdata consistencyMcKinsey & Company
Real-Time Notifications ArchitectureHard

Tests your system design skills for real-time delivery, scalability, and global reliability.

system designscalabilityMcKinsey & Company
Load Balancing and CachingMedium

Tests your ability to design scalable web infrastructure using load balancing and caching.

system designcachingload balancingMcKinsey & Company
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2
Coding4 questions · ~32 min
Dynamic Programming State LogicHard

Tests your ability to derive DP states and transitions for complex optimization problems.

Dynamic ProgrammingAlgorithmsMcKinsey & Company
Optimize Search Over Large DataMedium

Tests your ability to design efficient search and indexing strategies for large datasets.

SearchingData StructuresoptimizationMcKinsey & Company
Graph Traversal ImplementationMedium

Tests your ability to implement graph algorithms and justify data structure choices.

Data StructurestraversalGraphsMcKinsey & Company
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3
Behavioral & Leadership5 questions · ~40 min
Learning New Technology Under DeadlineMedium

Tests learning agility under pressure, plus ownership and prioritization when rapid technical ramp-up is required.

initiativeadaptabilitycontinuous learningMcKinsey & Company
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