McKinsey & Company Software Engineer Interview Questions

The questions to prepare for a McKinsey & Company Software Engineer interview. Questions from real interview reports rank first. Updated daily.

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System DesignStart here. 5 questions · ~40 min

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

Consistency During Network PartitionsHard

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

Networkingdistributed systemsdata consistency

McKinsey & Company

Real-Time Notifications ArchitectureHard

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

system designscalability

McKinsey & Company

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Coding3 questions · ~24 min

Tests your ability to improve performance and memory usage in data processing systems.

Optimize Search Over Large DataMedium

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

SearchingData Structuresoptimization

McKinsey & Company

Dynamic Programming State LogicHard

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

Dynamic ProgrammingAlgorithms

McKinsey & Company

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Behavioral & Leadership4 questions · ~32 min

Balancing Technical Debt and DeadlineMedium

Tests prioritization under pressure, technical judgment, and stakeholder management when technical debt threatens a client deadline.

client deadlineConflict Resolutiontechnical debt

McKinsey & Company

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