UnitedHealth Group Data Engineer Interview Questions
The questions to prepare for a UnitedHealth Group Data Engineer interview. Questions from real interview reports rank first. Updated daily.
Design and implement SCD Type 1 and Type 2 dimensions with history tracking, idempotent loads, and data quality controls.
UnitedHealth GroupApproach for protecting sensitive patient data while maintaining high data quality across an analytics pipeline.
UnitedHealth GroupCompare star and snowflake schemas in a warehouse pipeline, including structure and transformation trade-offs.
UnitedHealth GroupTests query optimization strategies for skewed joins at scale in a healthcare data environment.
UnitedHealth GroupTests relational modeling fundamentals and tradeoffs between normalization and analytics performance.
UnitedHealth GroupCalculate each completed patient visit's rolling 30-day count using PostgreSQL window functions and patient-provider joins.
UnitedHealth GroupIdentify Revolut merchants with high payment failure rates and report related support-resolution metrics.
RevolutCompute daily agent call KPIs and SLA using joins, aggregations, and window ranking in a contact center model.
ADPCompare generator expressions and list comprehensions by memory usage, execution model, and when each is preferable.
UnitedHealth GroupTests practical approaches for processing large datasets without exhausting memory.
UnitedHealth GroupTests Python data parsing skills and ability to transform nested healthcare-like JSON into tabular data.
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