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Updated weekly · Last refresh Aug 30

Duolingo Product Manager Interview Questions

The questions to prepare for a Duolingo Product Manager interview. Questions from real interview reports rank first. Updated weekly.

50questions
~7htotal time
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1
A/B Testing & ExperimentationStart here. 9 questions · ~72 min
Test Retention Lift from New FeatureHard

Design an experiment to determine whether a new product feature causes a meaningful retention lift without harming key guardrail metrics.

ExperimentationGuardrail MetricsA/B TestingDuolingo
Measure Long-Term Retention LiftHard

Design an experiment to tell whether a new feature improves true retention, not just short-term usage.

ExperimentationCausal InferenceGuardrail MetricsDuolingo
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2
Metrics10 questions · ~80 min
Diagnose Funnel Drop-OffMedium

Analyze where users drop off in a product funnel and identify the biggest conversion leak.

AARRR FrameworkFunnel AnalysisConversion RateDuolingo
Using Metrics to Drive DecisionsEasy

Explain how you used a KPI and supporting metrics to diagnose a product issue and make a concrete product decision.

Funnel AnalysisKPIsLeading IndicatorsDuolingo
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3
Strategy9 questions · ~72 min
Build Buy or Defer DecisionHard

Framework for deciding whether to build internally, buy a vendor product, or defer a technical solution.

EstimationCompetitive AnalysisMoatsDuolingo
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4
Product Sense10 questions · ~80 min
Gather Feedback on DesignsEasy

Explain how you gather design feedback, from early discovery through validation, and how you decide which signals to act on.

User ResearchUser NeedsPain PointsDuolingo
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5
Execution10 questions · ~80 min
Prioritize Work With Limited CapacityMedium

Prioritize competing engineering requests when capacity is constrained and stakeholders want different outcomes.

Trade-offsScope ManagementPrioritizationDuolingo
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 AssessmentDuolingo
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6
More topics2 questions · ~16 min
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