Optum Data Scientist Interview Questions
The questions to prepare for a Optum Data Scientist interview. Questions from real interview reports rank first. Updated weekly.
Explain how to train and evaluate a classifier when the positive class is rare and accuracy is misleading.
OptumExplain how transformer self-attention works, including its role in sequence modeling and why it scales better than RNNs.
OptumTests window function proficiency for time-based patient analytics and rolling metric computation.
OptumFind the second highest distinct salary from a single table using basic PostgreSQL ordering and limiting.
eClinicalWorks
Informatica
Spectraforce TechnologiesFind duplicate customer emails using GROUP BY and HAVING in PostgreSQL.
Western Digital
Bismart
University of Kansas Medical CenterUse PostgreSQL string functions to convert full names into a Last, First display format.
OptumTests statistical thinking and robust preprocessing for noisy, skewed healthcare measurements.
OptumTests understanding of classification metrics and tradeoffs relevant to Optum predictive modeling.
OptumIdentify major online experiment pitfalls and explain how they can bias results in a streaming product A/B test.
OptumInvestigate why a key KPI moved the wrong way after a product change and separate signal from noise.
OptumTests product sense and metric validity for measuring true workflow impact in healthcare.
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