Twilio Data Scientist Interview Questions

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

Cohort Retention with Window Functions

Hard

Tests advanced SQL for cohort and rolling retention calculations in product analytics.

Window FunctionsRetentionCohort Analysis

Twilio

Top Latency Spikes by Country

Medium

Tests SQL for time-window filtering and ranking countries by latency spike behavior.

Date FunctionsRankingAggregations

Twilio

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Segment Users and Predict Churn

Easy

Build a supervised churn model and an unsupervised user segmentation model, then explain when each learning approach is appropriate.

Unsupervised LearningFeature EngineeringSupervised Learning

Twilio

Predict Customer Churn

Medium

Build a churn model that flags at-risk customers early using behavioral, billing, and support signals.

Feature EngineeringModel EvaluationSupervised Learning

Twilio

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Statistical Significance for Product Metrics

Medium

Tests statistical testing choices and reporting for decision-making on Twilio product metrics.

Confidence IntervalsStatistical SignificanceP-Values

Twilio

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Improve Fraud Model Precision

Medium

Tests model evaluation tradeoffs and production optimization for fraud detection.

PrecisionThreshold TuningRecall

Twilio

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