Top 21
Prep plan
Updated weekly · Last refresh Oct 17

GM Financial Data Engineer Interview Questions

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

21questions
~3htotal time
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1
SQL & Data ManipulationStart here. 7 questions + 3 drills · ~86 min
Optimizing Slow Sales QueriesEasy

Explain how to diagnose and optimize a slow SQL query using execution plans, indexing, and simpler query patterns.

JoinsData WranglingAggregationsGM Financial
Clustered vs Non-Clustered IndexesMedium

Explain how clustered and non-clustered indexes differ in storage, lookup behavior, and query performance.

JoinsData WranglingGM Financial
Ensuring Data Quality at ScaleMedium

Assesses your data validation, consistency controls, and quality practices at scale.

Data Qualitylarge datasetsdata integrityGM Financial
Window Functions vs Group ByMedium

Assesses your SQL reasoning for advanced aggregations and correct query selection.

Window FunctionssqlAggregationsGM Financial
Rolling 3-Month Average by RegionMedium
Practice
Practice drill

Calculate monthly loan originations and their rolling 3-month average for each dealership region.

Window FunctionsDate Functionsfinancial dataGM Financial
SQL to Find Operational InefficiencyMedium
Practice
Practice drill

Identify Revolut merchants with high payment failure rates and report related support-resolution metrics.

Joinsbusiness problemsqlRevolut
SQL ExperienceMedium
Practice
Practice drill

Aggregate approved employee hours by department, including departments without qualifying records.

experienceJoinsCase WhenNational IndemnityDayforceAvalara
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2
Pipelines5 questions · ~40 min
Describe a Complex Transformation PipelineMedium

Explain a complex ETL transformation you built, including the main challenges and how you handled them.

ETLData ModelingQualityGM Financial
Data Quality in ETL PipelinesEasy

Approach for maintaining data quality and integrity across ETL pipelines.

IdempotencyData ModelingQualityGM Financial
Refactoring Legacy ETL JobsMedium

Assesses your performance engineering skills and safe refactoring practices for ETL.

refactoringperformanceETLGM Financial
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3
Behavioral & Leadership9 questions · ~72 min
Connecting Background to Data EngineeringEasy

Tests how clearly you connect your education and prior experience to data engineering impact, ownership, and career direction.

backgroundprojectstechnical experienceGM Financial
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The finish line: interview-readyComplete all 21 questions plus 3 hands-on drills to finish this plan.