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Updated weekly · Last refresh Aug 30

Sun Life Financial Data Scientist Interview Questions

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

34questions
~5htotal time
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1
Machine LearningStart here. 6 questions · ~49 min
2
A/B Testing & Experimentation3 questions · ~24 min
Pitfalls in Streaming Experiment AnalysisHard

Identify major online experiment pitfalls and explain how they can bias results in a streaming product A/B test.

Network InterferenceNovelty EffectSample Ratio MismatchSun Life Financial
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3
Product Sense3 questions · ~24 min
Retention Metrics and GuardrailsMedium

Evaluates your metric design for retention while managing risks via guardrails.

North Star MetricGuardrail MetricsProduct VisionSun Life Financial
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4
SQL & Data Manipulation3 questions + 3 drills · ~54 min
5
Behavioral & Leadership12 questions · ~97 min
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6
More topics7 questions · ~57 min
Design Feature Drift Monitoring SystemHard

Design a production ranking system with robust feature drift monitoring across batch and real-time features at high QPS.

Feature StoreFeature DriftModel ServingSun Life Financial
Statistical Significance in Business DecisionsEasy

Explain what statistical significance means, how p-values and confidence intervals support decisions, and why significance alone is not enough.

Hypothesis TestingStatistical SignificanceP-ValuesSun Life Financial
Diagnose KPI Drop After ReleaseMedium

Diagnose a post-release KPI drop by separating instrumentation issues from real behavior changes and tracing the problem through the metric hierarchy.

KPILeading IndicatorsDiagnosisSun Life Financial
Interpret F1 for Imbalanced ClassificationEasy

Explain why F1 is more informative than accuracy for a fraud model with 97.2% accuracy but only 18% recall on a 1% positive class.

F1 ScorePrecisionRecallSun Life Financial
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