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Updated weekly · Last refresh Sep 25

YouTube Research Scientist Interview Questions

The questions to prepare for a YouTube Research Scientist interview. Questions from real interview reports rank first. Updated daily.

12questions
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1
Machine LearningStart here. 4 questions · ~32 min
Bias Detection in Video RankingMedium

Evaluates your methods for bias detection and mitigation in video ranking systems.

mitigationYouTube
Modeling Engagement with SparsityMedium

Assesses your strategies for modeling engagement under sparse data for new creators.

modelinguser engagementYouTube
Objective Function for Brand BiddingMedium

Assesses how you formulate objectives for brand bidding optimization on YouTube Ads.

optimizationYouTube
Loss Function Trade-offs for Ad PredictionMedium

Evaluates your ability to reason about loss functions for ad-click prediction.

loss functionsTrade-offsModel EvaluationYouTube
2
Behavioral & Leadership5 questions · ~40 min
Defending a Complex Model ChoiceMedium

Tests influence without authority and ownership when defending a higher-complexity modeling decision against simpler alternatives.

Decision MakingStakeholder Managementtechnical experienceYouTube
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3
More topics3 questions · ~24 min
Design a Short-Video Retention RecommenderHard

Design a short-video recommendation system that balances immediate engagement with long-term retention in a personalized feed.

ML RankingRetrievalRecommendation SystemsYouTube
A/B Test with Conflicting MetricsMedium

Tests your ability to interpret and decide under conflicting A/B test metrics.

success metricsA/B TestingYouTube
Measuring Long-Term Feature ImpactMedium

Tests experimental design for measuring long-term creator productivity impact on YouTube.

experiment designYouTube

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