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Updated weekly · Last refresh Aug 30

Waymo Data Scientist Interview Questions

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

50questions
~8htotal time
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1
SQL & Data ManipulationStart here. 8 questions · ~78 min
2
Product Sense7 questions · ~68 min
3
Model Evaluation3 questions · ~29 min
Assess Data Source ReliabilityMedium

Evaluate how to assess whether model data sources are reliable enough for production use and ongoing monitoring.

Causal InferenceStatistical SignificanceAccuracyWaymo
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4
Statistics & Probability8 questions · ~78 min
Explaining the Central Limit TheoremMedium

Explain why sample means become approximately normal and why that matters for inference on product metrics.

DistributionsConfidence IntervalsCentral Limit TheoremWaymo
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5
Metrics8 questions · ~78 min
Primary Metric for Pedestrian DetectionMedium

Define a primary metric for pedestrian detection that reflects safety impact and balances missed detections against false alarms.

KPIsFeature PrioritizationUser NeedsWaymo
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6
Machine Learning4 questions · ~39 min
Handle Imbalanced Classification DataMedium

Build a classifier for a highly imbalanced dataset and choose metrics, sampling, and thresholds that fit the minority class.

Cross-ValidationFeature EngineeringSupervised LearningWaymo
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7
More topics12 questions · ~117 min
Reconciling Conflicting Operational MetricsMedium

Explain how to make an execution decision when multiple operational data sources disagree and stakeholders prefer different answers.

Trade-offsCommunicationUser NeedsWaymo
Choose Randomization Unit for Ride TestHard

Decide the right randomization unit for a ride-sharing experiment while accounting for interference, power, and guardrails.

Network InterferenceExperimentationA/B TestingWaymo
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