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Updated weekly · Last refresh Oct 17

Datadog Software Engineer Interview Questions

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

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~12htotal time
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1
CodingStart here. 17 questions · ~238 min
2
System Design16 questions · ~224 min
Video Sharing Service DesignHard

Design the ML architecture for personalized video discovery in a YouTube-like sharing service.

ML Rankingdesignml inferenceDatadog
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3
Pipelines5 questions · ~70 min
Tail Stream Query MatchingHard
Recently asked

Build a tail-stream processor that acknowledges word queries and emits every query ID whose words occur in each log line.

data pipelinedata parsingStream ProcessingDatadog
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4
Behavioral & Leadership4 questions · ~56 min
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5
More topics8 questions · ~112 min
Live-tail Query-Log MatchingMedium
Practice

Parse live-tail queries and logs, then return incrementing query IDs whose words all occur in each log line.

null handlingData Manipulationdata handlingDatadog
Semantic HTML ImportanceMedium
Recently asked

Assesses foundational web knowledge and attention to accessibility and maintainability.

Datadog
Explaining Architecture Trade-offs ClearlyMedium
Recently asked

Tests technical ownership and communication through a concrete architecture decision, with emphasis on trade-offs, judgment, and lessons learned.

Trade-offsrecent projectstechnical experienceDatadog
Use Datadog in Your ProductMedium
Recently asked

Assesses your understanding of Datadog’s observability capabilities and how to integrate them.

monitoringDatadog
Rate Limiter BasicsMedium
Recently asked

Assesses your foundational knowledge of rate limiting and its purpose in systems.

rate limitingDatadog
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Hands-on SQL practiceWrite and run real queries in the editor. 2 drills · ~20 min
The finish line: interview-readyComplete all 50 questions plus 2 hands-on drills to finish this plan.