Optum Technology Data Scientist Interview Questions
The questions to prepare for a Optum Technology Data Scientist interview. Questions from real interview reports rank first. Updated weekly.
Explain how a primary metric differs from a guardrail metric and how both are used in A/B test decisions.
Optum TechnologyExplain how to test whether an observed experiment lift is real using hypothesis testing, p-values, and confidence intervals.
Optum TechnologyDiagnose a post-release KPI drop by separating instrumentation issues from real behavior changes and tracing the problem through the metric hierarchy.
Optum TechnologyExplain how L1 and L2 regularization differ geometrically and probabilistically, grounded in a practical supervised learning example.
Optum TechnologyTests your ability to architect scalable data and ML pipelines for large-scale healthcare datasets.
Optum TechnologyTests your understanding of evaluation metrics for healthcare prediction tasks and tradeoffs.
Optum TechnologyTests your product thinking for defining measurable, user-centered engagement metrics in healthcare.
Optum TechnologyTests SQL window function skills for time-series aggregation in a healthcare setting.
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Compute daily active users and a 7-day rolling average using a CTE, distinct counts, and window functions.
Meta
Spotify
Meta ITCalculate each customer's cumulative transaction amount over time using a CTE and window function.
Banco Santander
Anz
Bank Of Tokyo-Mitsubishi UFJCalculate a rolling 7-day average of system error counts using window functions and date-based aggregation.
Datadog
Toyota
Agile Defense