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Updated weekly · Last refresh Oct 17

Zapier Data Scientist Interview Questions

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

33questions
~5htotal time
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1
SQL & Data ManipulationStart here. 5 questions · ~46 min
7-Day Rolling Active UsersMedium
Practice

Compute daily active users and a 7-day rolling average using a CTE, distinct counts, and window functions.

Window FunctionsDate FunctionsRunning TotalsZapier
Segments by Tasks Per LoginMedium
Practice

Compare task executions per login across user segments and return the segment or segments with the highest ratio.

JoinsRankingGroup ByZapier
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2
Statistics & Probability4 questions · ~37 min
Correlation Versus Causation in AnalyticsEasy

Explain why two business metrics moving together does not prove one causes the other, and how you would validate causality.

CorrelationHypothesis TestingCausal InferenceZapier
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3
A/B Testing & Experimentation3 questions · ~28 min
Design Test for Novelty and SpilloversHard

Design an experiment that accounts for novelty effects and network spillovers before deciding whether to ship.

Network InterferenceExperimentationNovelty EffectZapier
Primary vs Guardrail MetricsEasy

Explain how a primary metric differs from a guardrail metric and how both are used in A/B test decisions.

ExperimentationGuardrail MetricsA/B TestingZapier
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4
Product Sense4 questions · ~37 min
Funnel Drop-off VisualizationsEasy

Tests product analytics thinking about how to communicate funnel friction effectively.

Funnel AnalysisUser ResearchUse CasesZapier
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5
Behavioral & Leadership13 questions · ~120 min
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6
More topics4 questions · ~37 min
Diagnose Activation Conversion DropHard

Investigate why signup to activation conversion fell from 41% to 29% after onboarding and acquisition changes.

Funnel AnalysisConversion RateDiagnosisZapier
Model Overfitting FixesMedium

Evaluates your approach to diagnosing and reducing overfitting in machine learning models.

overfittingZapier
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