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Evernorth Health Services Data Engineer Interview Questions

The questions to prepare for a Evernorth Health Services Data Engineer interview. Questions from real interview reports rank first. Updated weekly.

25questions
~3htotal time
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1
PipelinesStart here. 15 questions · ~120 min
Explain ETL in Data EngineeringEasy

Explain the ETL process, why it matters, and how it fits into a practical data pipeline.

ETLOrchestrationQualityEvernorth Health Services
Data Quality in ETL PipelinesEasy

Approach for maintaining data quality and integrity across ETL pipelines.

IdempotencyData ModelingQualityEvernorth Health Services
Structured vs Unstructured DataEasy

Explain how structured and unstructured data differ, and why that matters for pipeline design and downstream processing.

ETLData ModelingQualityEvernorth Health Services
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2
SQL & Data Manipulation4 questions + 3 drills · ~62 min
Join Types and When to Use ThemEasy

Tests understanding of join semantics and ability to choose the right join for data needs.

JoinsData WranglingCase WhenEvernorth Health Services
Improving Data Retrieval TimesMedium

Tests performance investigation and optimization strategies for faster query and access.

Joinsindexesquery optimizationEvernorth Health Services
SQL Query Performance TuningMedium

Tests SQL performance tuning skills and understanding of query optimization.

Joinsquery optimizationAggregationsEvernorth Health Services
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
Handle Missing Financial Input ValuesMedium
Practice
Practice drill

Use joins, CTEs, and CASE logic to flag and fill missing financial fields for Qlik planning records.

Data WranglingETLQualityQlik
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3
Behavioral & Leadership5 questions · ~40 min
Prioritizing Conflicting High-Stakes WorkEasy

Tests prioritization under pressure, stakeholder management, and ownership when multiple urgent requests compete for limited time.

Stakeholder ManagementOwnershipDealing With AmbiguityEvernorth Health Services
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4
More topics1 question · ~8 min
Implementing Data DeduplicationMedium

Tests ability to design robust deduplication logic and handle duplicates safely.

Hash TablesArraysSortingEvernorth Health Services
The finish line: interview-readyComplete all 25 questions plus 3 hands-on drills to finish this plan.