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Voya Financial Data Engineer Interview Questions

The questions to prepare for a Voya Financial Data Engineer interview. Questions from real interview reports rank first. Updated daily.

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1
SQL & Data ManipulationStart here. 6 questions + 3 drills · ~78 min
Optimizing Slow Queries at ScaleHard

Explain how to diagnose and optimize a slow PostgreSQL query on large Apidel Technologies datasets.

SubqueriesJoinsData WranglingVoya Financial
Understanding Common Table Expressions (CTEs)Medium

Explain what CTEs are and their advantages in SQL queries.

CTEsVoya Financial
Difference Between WHERE and HAVING ClausesEasy

Explain the differences between WHERE and HAVING clauses in SQL and when to use each.

JoinsData WranglingAggregationsVoya Financial
Explain SQL Join TypesEasy

Explain INNER, LEFT, RIGHT, FULL OUTER, CROSS, and SELF JOINs with examples and when to use each.

JoinsData WranglingGroup ByVoya Financial
Top Customers by Net SalesMedium
Practice
Practice drill

Compute top 10 customers by net sales using joins and aggregations, ordering by revenue with deterministic tie-breaking.

SubqueriesJoinsData WranglingGain DigitalTCSZest AI
Unify CRM and Google Analytics ViewHard
Practice
Practice drill

Merge CRM orders with GA events via an identity map to build a customer-level view using joins, window functions, and monthly rollups.

SubqueriesJoinsData WranglingArtefact
SQL Self Joins and ExplodeMedium
Practice
Practice drill

Transform comma-separated employee tags, join employees to managers, and aggregate active direct reports by manager and tag.

pysparkaggregationJoinsTredence
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2
Pipelines5 questions · ~40 min
Monitoring Databricks Resource UsageMedium

Tests your ability to monitor and act on resource signals to prevent performance and stability issues.

cloud infrastructuredatabricksVoya Financial
Troubleshoot Failed Distributed PipelinesHard

Tests your debugging strategy for distributed systems and your ability to restore data pipeline reliability.

data pipelinedistributed systemsTroubleshootingVoya Financial
Sizing Clusters for ETLMedium

Assesses your approach to balancing cost and performance for ETL workloads.

ETLdatabricksVoya Financial
Databricks Cluster PerformanceMedium

Assesses your ability to tune Databricks infrastructure for reliable, high-performance data workloads.

performance optimizationdatabricksVoya Financial
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