Top 45
Prep plan
Updated weekly · Last refresh Oct 15

Twilio Data Scientist Interview Questions

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

45questions
~7htotal time
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1
SQL & Data ManipulationStart here. 9 questions · ~84 min
Top Latency Spikes by CountryMedium
Practice

Given a table of message delivery logs, write a query to identify the top three destination countries with the highest latency spikes over the past 48 hour...

Date FunctionsRankingAggregationsTwilio
MoM Growth of Active API UsersMedium
Practice

Calculate monthly active API users and their month-over-month growth rate using PostgreSQL date aggregation and joins.

Window FunctionsDate FunctionsData ManipulationTwilio
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2
Machine Learning6 questions · ~56 min
3
A/B Testing & Experimentation6 questions · ~56 min
Design Test for Novelty and SpilloversHard

Design an experiment that accounts for novelty effects and network spillovers before deciding whether to ship.

Network InterferenceExperimentationNovelty EffectTwilio
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4
Metrics7 questions · ~65 min
First Checks for Metric DropsEasy

Outline the first checks to diagnose a sudden drop in a core product metric, starting with data quality, scope, and decomposition.

Lagging IndicatorsLeading IndicatorsDiagnosisTwilio
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5
Statistics & Probability5 questions · ~47 min
Probabilistic Model for Delivery under Network ConstraintsHard

Evaluates probabilistic modeling for delivery under network variability.

Twilio
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6
Behavioral & Leadership9 questions · ~84 min
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7
More topics3 questions · ~28 min
Improve Fraud Model PrecisionMedium

Tests model evaluation tradeoffs and production optimization for fraud detection.

PrecisionThreshold TuningRecallTwilio
Long-Term Health of Developer APIMedium

Assesses metric design for API adoption and retention in Twilio developer ecosystem.

product metricsTwilio
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