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E15 Group Interview Questions

The questions to prepare for E15 Group interviews, across all roles. Questions from real interview reports rank first. Updated weekly.

36questions
~5htotal time
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1
PipelinesStart here. 5 questions · ~40 min
Data Quality in ETL PipelinesEasy

Approach for maintaining data quality and integrity across ETL pipelines.

IdempotencyData ModelingQualityE15 Group
Handling Missing Data in PipelinesMedium

Approach for handling missing data in an ML data pipeline, including validation, imputation, and safe downstream consumption.

InfrastructureETLBatch ProcessingE15 Group
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2
Metrics3 questions · ~24 min
Investigate User Engagement DeclineMedium

Investigate a 15% engagement decline by decomposing the metric, isolating root causes, and proposing actions.

RetentionDiagnosisEngagement MetricsE15 Group
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3
Product Sense3 questions · ~24 min
Align Product With User NeedsMedium

A framework for connecting user needs to business goals, then making product decisions with clear trade-offs and measurable outcomes.

User NeedsValue PropositionProduct VisionE15 Group
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4
SQL & Data Manipulation3 questions + 3 drills · ~54 min
5
Strategy4 questions · ~32 min
Prioritize Research by ObjectivesMedium

Tests your strategy-to-execution alignment and ability to choose the highest-value research work.

EstimationCompetitive AnalysisGrowth StrategyE15 Group
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6
Behavioral & Leadership14 questions · ~112 min
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7
More topics4 questions · ~32 min
Adapt to Rapid Project ChangesEasy

Explain how you adapt execution plans when priorities shift quickly without losing stakeholder alignment or delivery momentum.

Trade-offsRoadmappingRisk AssessmentE15 Group
Identifying Trends From a DatasetMedium

Tests exploratory analysis skills and ability to derive meaningful conclusions.

RegressionCorrelationData WranglingE15 Group
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The finish line: interview-readyComplete all 36 questions plus 3 hands-on drills to finish this plan.