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Selby Jennings Interview Questions

The questions to prepare for Selby Jennings interviews, across all roles. Questions from real interview reports rank first. Updated daily.

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1
Finance & AccountingStart here. 9 questions · ~73 min
2
Pipelines5 questions · ~41 min
Data Quality in ETL PipelinesEasy

Approach for maintaining data quality and integrity across ETL pipelines.

IdempotencyData ModelingQualitySelby Jennings
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3
Execution8 questions · ~65 min
Prioritize Conflicting Engineering DeadlinesMedium

Explain how you would prioritize competing engineering deadlines when stakeholders, business impact, and delivery risk are all in tension.

Trade-offsRoadmappingRisk AssessmentSelby Jennings
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4
Strategy4 questions · ~33 min
Pivoting Strategy From Customer SignalsMedium

Describe how you used market or customer data to change course, and how you made the new strategy credible and measurable.

EstimationCompetitive AnalysisGrowth StrategySelby Jennings
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5
Machine Learning9 questions · ~73 min
Handling MulticollinearityHard

Diagnose multicollinearity in a linear regression model and select an appropriate mitigation while preserving predictive performance.

Feature Engineeringlinear regressionRegularizationSelby Jennings
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6
Coding5 questions · ~41 min
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7
More topics10 questions · ~82 min
Real-Time Ingestion System DesignHard

Design a fault-tolerant real-time ingestion and ML processing system with low latency, scalable state, and reliable downstream outputs.

distributed systemsscalabilitydata ingestionSelby Jennings
Measure Recruiting EffectivenessMedium

Define recruiting KPIs that show whether hiring efforts are producing qualified candidates and successful hires.

KPIsLeading IndicatorsDiagnosisSelby Jennings
Portfolio Variance from Covariance and CorrelationEasy

Explain covariance vs. correlation and calculate 2-asset portfolio variance to show how dependence affects diversification.

RegressionCorrelationVarianceSelby Jennings
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Hands-on SQL practiceWrite and run real queries in the editor. 3 drills · ~30 min
The finish line: interview-readyComplete all 50 questions plus 3 hands-on drills to finish this plan.