TikTok DevOps Engineer Interview Questions

The questions to prepare for a TikTok DevOps Engineer interview. Questions from real interview reports rank first. Updated daily.

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CodingStart here. 5 questions · ~52 min

Use Kadane's algorithm to find the contiguous subarray with the largest sum in linear time.

Parse Logs for Top OffendersMedium

Practice

Stream application logs, aggregate 5xx responses by IP, and return the top ten addresses using a bounded heap.

aggregationfrequency countStrings

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Server Dependency Boot SequenceMedium

Practice

Use Kahn's algorithm to order TikTok servers by dependency and detect impossible cyclic boot sequences.

topological sortbfscycle detection

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Execution5 questions · ~52 min

Explain your approach to rolling updates, canary releases, and zero-downtime deployments with clear rollback criteria and stakeholder alignment.

Split-Brain Handling in ConsensusHard

Explain how to preserve consistency, isolate conflicting nodes, and restore service during a TikTok consensus-cluster network partition.

distributed systemsconsistencyRisk Assessment

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Technical Fundamentals4 questions · ~42 min

Linux Page Cache ImpactHard

Explains how Linux caches file data in RAM, affects read and write latency, and changes how disk I/O measurements should be interpreted.

linux tuningperformance baselinestechnical fundamentals

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Diagnosing Connection RefusedMedium

Tests systematic troubleshooting across networking, service health, and microservice connectivity.

technicalTroubleshootingmicroservices

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Behavioral & Leadership13 questions · ~136 min

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