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General Motors (GM) Software Engineer Interview Questions

The questions to prepare for a General Motors (GM) Software Engineer interview. Questions from real interview reports rank first. Updated daily.

50questions
~12htotal time
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1
CodingStart here. 18 questions · ~254 min
Merge Sorted Arrays ExternallyMedium
Practice

Merge multiple sorted arrays with a min heap while keeping only one current value per input array in memory.

ArraysArray ManipulationAlgorithmsGeneral Motors (GM)
Evaluate RPN Expression with StackMedium
Practice

Evaluate a postfix arithmetic expression in one pass using a stack.

CodingData StructuresAlgorithmsGeneral Motors (GM)
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2
System Design11 questions · ~155 min
Fleet Management System DesignHard

Design a fleet management system with a scalable data model and optimized NoSQL writes for ML-ready fleet data.

fleet datadistributed systemsdata ingestionGeneral Motors (GM)
Lane Keep Assist RequirementsMedium
Recently asked

Evaluates requirements gathering and technical understanding for an automotive feature.

requirementsGeneral Motors (GM)
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3
Execution10 questions · ~141 min
Software Development LifecycleMedium
Recently asked

Explain the software development lifecycle and connect each phase to your practical engineering experience.

automated testingdevelopment lifecycleRoadmappingGeneral Motors (GM)
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4
Behavioral & Leadership5 questions · ~71 min
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5
More topics6 questions · ~85 min
Java Memory Management and GCHard
Recently asked

Tests how Java heap allocation, reachability, and garbage collection work, plus the practical impact on leaks and pauses.

memory managementmemory leakjavaGeneral Motors (GM)
PLC Unresponsive TroubleshootingMedium
Recently asked

Assesses troubleshooting methodology for industrial systems and reliability.

TroubleshootingGeneral Motors (GM)
SQL and Data ManipulationMedium
Recently asked

Evaluates practical SQL skills for extracting and transforming data.

sqlGeneral Motors (GM)
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Hands-on SQL practiceWrite and run real queries in the editor. 3 drills · ~30 min
Running 30-Day Active Users SQLMedium
Practice
Recently asked
Practice drill

Calculate rolling 30-day distinct OnStar users using a deduplication window function and date-range aggregation.

Window FunctionssqlGeneral Motors (GM)
Top Contributors to Diagnostic Trouble CodesMedium
Practice
Recently asked
Practice drill

Rank GM vehicle models by diagnostic trouble code volume using joins, conditional aggregation, and a window function.

sqlGeneral Motors (GM)
Optimizing a Slow QueryMedium
Practice
Practice drill

Rewrite a slow PostgreSQL reporting query to reduce scanned rows, avoid join multiplication, and return accurate monthly site metrics.

Subqueriesdatabase optimizationJoinsContinental FinanceCapgeminiDISH
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