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Updated weekly · Last refresh Aug 30

Cloud Big Data Technologies Data Scientist Interview Questions

The questions to prepare for a Cloud Big Data Technologies Data Scientist interview. Questions from real interview reports rank first. Updated weekly.

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1
A/B Testing & ExperimentationStart here. 3 questions · ~24 min
Acquisition and Retention Feature TestHard
Recently asked

Design an experiment for a feature that can lift acquisition while also changing downstream retention and user quality.

Funnel AnalysisRetentionA/B TestingCloud Big Data Technologies
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2
SQL & Data Manipulation3 questions + 3 drills · ~54 min
Optimize Multi-Terabyte JoinHard
Recently asked

Tests query optimization skills for large-scale joins and performance constraints.

large datasetsCloud Big Data Technologies
Monthly Sales Trends by CategoryMedium
Practice
Practice drill

Aggregate monthly sales by product category and use LAG to calculate month-over-month changes.

InfrastructureToolsData WranglingTotal Wine & MoreInc.Benjamin Moore
SQL Funnel Drop-Off AnalysisHard
Practice
Practice drill

Measure sequential Airbnb Homes funnel engagement and drop-off using CTEs, joins, aggregation, and LAG.

sql queryData Analysisuser engagementAirbnb
Top 10 Users by Watch TimeMedium
Practice
Practice drill

Rank the top 10 Disney+ Hotstar users in India by January watch time using a CTE, LEFT JOIN, and aggregation.

sql queryData Analysisuser engagementDDisney+HotStar
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3
Machine Learning8 questions · ~64 min
Custom Loss Function ImplementationHard
Recently asked

Tests ability to extend ML frameworks with correct loss definitions and training behavior.

implementationCloud Big Data Technologies
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4
Statistics & Probability3 questions · ~24 min
Correlation vs Causation in A/BMedium
Recently asked

Tests statistical reasoning about causal inference in experiments.

CorrelationCloud Big Data Technologies
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5
Behavioral & Leadership7 questions · ~56 min
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6
More topics5 questions · ~40 min
Explain Precision Recall TradeoffEasy
Recently asked

Explain precision versus recall in plain language and how the tradeoff affects product decisions.

PrecisionThreshold TuningRecallCloud Big Data Technologies
First Checks for Metric DropsEasy
Recently asked

Outline the first checks to diagnose a sudden drop in a core product metric, starting with data quality, scope, and decomposition.

Lagging IndicatorsLeading IndicatorsDiagnosisCloud Big Data Technologies
Debugging Production Data PipelinesMedium
Recently asked

A structured approach to debugging production data pipelines, with focus on orchestration, data quality, idempotency, and safe backfills.

InfrastructureToolsQualityCloud Big Data Technologies
Design Engagement Product MetricMedium
Recently asked

Tests metric design, instrumentation thinking, and alignment with user value.

designuser engagementCloud Big Data Technologies
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The finish line: interview-readyComplete all 29 questions plus 3 hands-on drills to finish this plan.