Top 17
Prep plan
Updated weekly · Last refresh Aug 30

Optum Technology Machine Learning Engineer Interview Questions

The questions to prepare for a Optum Technology Machine Learning Engineer interview. Questions from real interview reports rank first. Updated weekly.

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1
Machine LearningStart here. 6 questions · ~48 min
Bias-Variance in Model SelectionMedium

Explain how the bias-variance tradeoff guides model selection and generalization.

Cross-ValidationBias-Variance TradeoffRegularizationOptum Technology
Bias Variance Tradeoff BasicsEasy

Explain how bias and variance affect generalization, and how model complexity changes the balance.

Cross-ValidationBias-Variance TradeoffSupervised LearningOptum Technology
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2
Pipelines3 questions · ~24 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
Versioning Datasets and ModelsMedium

Best practices for reproducible dataset and model versioning in shared ML pipelines.

Data QualityToolsAutomationOptum Technology
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3
System Design3 questions · ~24 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
Design a Real-Time ML Feature StoreHard

Design a shared feature store for training and low-latency inference across many ML systems with strict freshness and consistency needs.

Feature StoreFeature DriftModel ServingOptum Technology
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4
Behavioral & Leadership3 questions · ~24 min
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5
More topics2 questions · ~16 min
Monitor Model Performance Over TimeMedium

Approach for continuously monitoring a deployed model and keeping performance stable as data changes.

CalibrationAccuracyThreshold TuningOptum Technology
Choose Classification MetricsMedium

Choose the right classification metrics, and explain when precision, recall, and F1 score matter most.

F1 ScorePrecisionRecallOptum Technology
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