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Updated weekly · Last refresh Aug 30

Chewy Research Scientist Interview Questions

The questions to prepare for a Chewy Research Scientist interview. Questions from real interview reports rank first. Updated weekly.

20questions
~3htotal time
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1
Machine LearningStart here. 8 questions · ~64 min
Build a Customer Churn ModelHard

Build a churn prediction model for a subscription wellness business using behavioral, billing, and engagement data.

Cross-ValidationFeature EngineeringSupervised LearningChewy
Heuristics vs Exact SolversMedium

Tests decision-making about solver choice under performance and optimality constraints.

optimizationChewy
Lead Time Uncertainty in OptimizationHard

Tests ability to incorporate stochastic lead times into optimization for supply chain decisions.

uncertaintysupply chainoptimizationChewy
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2
Coding5 questions · ~40 min
Pandas Rolling Customer AveragesMedium

Tests practical Pandas skills for large-scale customer order feature engineering.

pandasSliding WindowpythonChewy
Network Flow for Shipping DeadlinesHard

Tests ability to map logistics constraints to network flow formulations.

GraphsoptimizationChewy
Efficient Missing Data ImputationMedium

Tests ability to clean and impute warehouse time series data efficiently with Pandas.

data preprocessingpandaspythonChewy
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3
Behavioral & Leadership5 questions · ~40 min
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4
More topics2 questions · ~16 min
Forecast Metrics to Business KPIsMedium

Tests ability to connect model evaluation metrics to operational business outcomes.

ForecastingModel MetricsChewy
Statistics and Math FoundationsMedium

Evaluates your statistical and mathematical foundations relevant to research work.

domain knowledgeChewy
The finish line: interview-readyComplete all 20 questions to finish this plan.