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Updated weekly · Last refresh Oct 18

Precision Medicine Group Data Engineer Interview Questions

The questions to prepare for a Precision Medicine Group Data Engineer interview. Questions from real interview reports rank first. Updated daily.

8questions
~2htotal time
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1
PipelinesStart here. 5 questions · ~58 min
Map EDC to SDTMHard

Tests your ability to transform EDC data into SDTM structures reliably for clinical reporting.

ETLData ModelingQualityPrecision Medicine Group
Optimize Slow ETL for Clinical ReportsHard

Tests performance tuning and operational thinking for pipelines supporting clinical reporting.

InfrastructureETLBatch ProcessingPrecision Medicine Group
Design for Schema DriftHard

Tests your robustness patterns for evolving clinical data feeds in production.

ETLData ModelingQualityPrecision Medicine Group
Handle Mid-Study UpdatesHard

Tests your change-management approach to keep clinical analytics stable during updates.

ETLIdempotencyDependenciesPrecision Medicine Group
Daily Lab Ingestion PipelineHard

Tests your end-to-end pipeline design for vendor data ingestion, cleaning, and warehouse loading.

ETLBatch ProcessingOrchestrationPrecision Medicine Group
2
More topics3 questions · ~35 min
Latest Lab Result SQLMedium
Practice

Return each enrolled patient's latest lab result using study filtering and row numbering by visit date.

Window FunctionsDate FunctionsJoinsPrecision Medicine Group
Flatten Nested Patient JSONMedium
Practice

Recursively flatten nested patient records and remove duplicate flattened records while preserving input order.

Hash TablesdeduplicationArraysPrecision Medicine Group
Validate SQL Before ProductionEasy

Tests your testing strategy to prevent data quality and correctness issues in production pipelines.

Data WranglingCTEsQualityPrecision Medicine Group

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Hands-on SQL practiceWrite and run real queries in the editor. 2 drills · ~20 min
Monthly Sales Trends by CategoryMedium
Practice
Practice drill

Aggregate monthly sales by product category and use LAG to calculate month-over-month changes.

InfrastructureToolsData WranglingTotal Wine & MoreInc.Benjamin Moore
Contact Center Agent Performance MetricsHard
Practice
Practice drill

Compute daily agent call KPIs and SLA using joins, aggregations, and window ranking in a contact center model.

ETLAggregationsData ModelingADP
The finish line: interview-readyComplete all 8 questions plus 2 hands-on drills to finish this plan.