Top 16
Prep plan
Updated weekly · Last refresh Sep 21
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Depop Data Scientist Interview Questions

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

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1
A/B Testing & ExperimentationStart here. 4 questions · ~35 min
Marketplace Experiment Pitfalls in UberHard

Assess pitfalls in a two-sided marketplace experiment, including interference, SRM, and guardrails before deciding whether results are trustworthy.

Network InterferenceNovelty EffectSample Ratio MismatchDDepop
Common Pitfalls in Experiment ResultsHard

Identify the main pitfalls that can distort A/B test interpretation and explain how to guard against them.

PeekingNovelty EffectSample Ratio MismatchDDepop
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2
Product Sense4 questions · ~35 min
Measuring Trending Feed SuccessMedium

Tests ability to define product metrics and evaluation criteria for a marketplace feature.

product metricsuser engagementDDepop
Marketplace Health MetricsMedium

Evaluates ability to select and justify metrics that reflect marketplace performance and user value.

product metricsuser engagementDDepop
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3
Behavioral & Leadership4 questions · ~35 min
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4
More topics4 questions · ~35 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 TotalsDDepop
First Checks for Metric DropsEasy

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

Lagging IndicatorsLeading IndicatorsDiagnosisDDepop
Significance Metric for Marketplace ExperimentsMedium

Evaluates ability to translate statistical significance into actionable, well-defined experiment reporting.

Statistical SignificanceDDepop
Sample Size for New ExperimentMedium

Tests ability to compute sample size using power, effect size, and error rates.

experiment designStatistical SignificanceSample SizeDDepop

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The finish line: interview-readyComplete all 16 questions plus 2 hands-on drills to finish this plan.