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Updated weekly · Last refresh Oct 17

Gen Digital Data Scientist Interview Questions

The questions to prepare for a Gen Digital Data Scientist interview. Questions from real interview reports rank first. Updated daily.

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1
Machine LearningStart here. 6 questions · ~49 min
Random Forest vs Gradient BoostingMedium

Compare Random Forest and Gradient Boosting, then choose the right ensemble for a supervised learning task.

Ensemble MethodsBias-Variance TradeoffSupervised LearningGen Digital
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2
Behavioral & Leadership9 questions · ~73 min
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3
More topics13 questions · ~106 min
Design Test for New FeatureMedium

Design an A/B test for a new platform feature, including success metrics, power, guardrails, and a clear ship decision.

experiment designfeature evaluationA/B TestingGen Digital
Evaluating Observed Lift SignificanceMedium

Explain how to test whether an observed experiment lift is real using hypothesis testing, p-values, and confidence intervals.

Confidence IntervalsStatistical SignificanceP-ValuesGen Digital
Diagnose a Metric Drop After LaunchMedium

Investigate why a key KPI moved the wrong way after a product change and separate signal from noise.

Lagging IndicatorsLeading IndicatorsDiagnosisGen Digital
Detect Scam Videos SystemHard

Assesses system design skills for building and operating a scam video detection pipeline at scale.

system designGen Digital
SQL Rolling Retention by CohortHard

Tests advanced SQL skills for cohort retention analytics in a product context.

Window FunctionsRetentionCohort AnalysisGen Digital
List vs Generator in PythonEasy

Tests understanding of Python memory and iteration behavior.

Communicationpythontechnical knowledgeGen Digital
Engagement vs Churn TradeoffMedium

Tests product decision-making using metrics, tradeoffs, and risk-aware reasoning.

Feature PrioritizationtradeoffsChurnGen Digital
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Hands-on SQL practiceWrite and run real queries in the editor. 3 drills · ~30 min
SQL Inner Join for SubscriptionsEasy
Practice
Practice drill

Use an INNER JOIN to return matching user account details and subscription statuses.

SubqueriesJoinsData WranglingGen Digital
Second Highest Salary at NovaTechEasy
Practice
Practice drill

Find the second highest distinct employee salary from a single table, returning NULL if it does not exist.

SubqueriesRankingAggregationsBest BuyAmtex SystemsC3 AI
Handling Missing DataMedium
Practice
Practice drill

Standardize missing observation fields with fallback values, missingness flags, and ordered output.

Window Functionsmissing valuesdata cleaningEversource EnergyCincinnati Children's HospitalAdtalem Global Education
The finish line: interview-readyComplete all 28 questions plus 3 hands-on drills to finish this plan.