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Optum Technology Interview Questions

The questions to prepare for Optum Technology interviews, across all roles. Questions from real interview reports rank first. Updated weekly.

50questions
~7htotal time
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1
CodingStart here. 5 questions · ~43 min
2
Execution5 questions · ~43 min
Handle Scope Creep Mid-ProjectMedium

Explain how you would manage scope creep without damaging stakeholder trust or putting delivery at risk.

Trade-offsRisk AssessmentScope ManagementOptum Technology
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3
Pipelines6 questions · ~51 min
Data Quality and Schema EvolutionMedium

Approach for handling schema changes and data quality checks in a high-volume data lake pipeline.

schema evolutionData ModelingQualityOptum Technology
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4
Machine Learning6 questions · ~51 min
Bias-Variance Tradeoff in PracticeMedium

Explain the bias-variance tradeoff and how it guides model choice, regularization, and generalization performance.

Cross-ValidationBias-Variance TradeoffRegularizationOptum Technology
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5
System Design4 questions · ~34 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 ServingOptum Technology
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6
SQL & Data Manipulation6 questions + 3 drills · ~81 min
7
More topics18 questions · ~154 min
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 IndicatorsDiagnosisOptum Technology
Primary vs Guardrail MetricsEasy

Explain how a primary metric differs from a guardrail metric and how both are used in A/B test decisions.

ExperimentationGuardrail MetricsA/B TestingOptum Technology
Evaluating Observed Lift SignificanceMedium

Explain how to test whether an observed experiment lift is real using hypothesis testing, p-values, and confidence intervals.

Confidence IntervalsStatistical SignificanceP-ValuesOptum Technology
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