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Amazon Data Services Applied Scientist Interview Questions

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

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1
Machine LearningStart here. 4 questions · ~32 min
Precision vs Recall Trade-offsMedium

Explain how classification thresholds affect precision and recall, then select an operating point based on error costs.

ClassificationPrecisionModel EvaluationAmazon Data Services
Feature Engineering for RecsHard

Design and evaluate user, item, context, and interaction features for a recommendation ranking model.

data preprocessingmodel selectionFeature EngineeringAmazon Data Services
Detect Fraudulent TransactionsHard

Design and evaluate a fraud classification pipeline that balances fraud detection, false positives, latency, and interpretability.

fraud detectionClassificationinterpretabilityAmazon Data Services
Handling Data Drift in ProductionHard

Design a production data-drift monitoring workflow with statistical tests, alerts, retraining rules, and post-deployment model validation.

data driftproduction environmentmodel validationAmazon Data Services
2
Behavioral & Leadership4 questions · ~32 min
Pivoting Research Under ConstraintsMedium

Tests adaptability, prioritization, and research judgment when unexpected constraints invalidate the original methodology.

adaptabilitybehavioralflexibilityAmazon Data Services
Handling Engineering ConflictsMedium

Tests conflict resolution, cross-functional influence, ownership, and productive partnership with Engineering.

Conflict ResolutionadaptabilityaccountabilityAmazon Data Services
Own a Failing ProjectMedium

Tests ownership, prioritization, and leadership when a project is failing or stalled.

behavior under pressureOwnershipaccountabilityAmazon Data Services
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3
More topics1 question · ~8 min
Low-Latency Real-Time Inference ArchitectureHard

Design a low-latency real-time inference architecture covering model execution, serving, hardware, scaling, and failure handling.

gpu hardwareinference latencyml inferenceAmazon Data Services

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