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Epic Games Backend Engineer Interview Questions

The questions to prepare for a Epic Games Backend Engineer interview. Questions from real interview reports rank first. Updated daily.

50questions
~7htotal time
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1
Technical FundamentalsStart here. 5 questions · ~40 min
Metaverse UnderstandingMedium

Evaluates your ability to discuss emerging concepts and relate them to technology and product thinking.

Epic Games
Containerization and OrchestrationMedium

Assesses your practical experience deploying and operating backend services using modern infrastructure tools.

experiencecontainerizationEpic Games
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2
System Design27 questions · ~217 min
Design a Matching ServiceMedium

Assesses your system design skills for building a backend that matches users based on requirements.

Epic Games
Full-Scale Twitter ArchitectureHard

Assesses your end-to-end system design capability for a large-scale social platform workload.

architectureEpic Games
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3
Coding6 questions · ~48 min
Maintainable and Scalable CodeMedium

Tests engineering practices that support long-term evolution, readability, and performance.

code qualityDynamic ProgrammingAlgorithmsEpic Games
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4
Behavioral & Leadership8 questions · ~64 min
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5
More topics4 questions · ~32 min
Onboarding and Internal LibrariesMedium

Evaluates your ability to ramp teammates quickly and make sound modularity decisions for backend systems.

onboardingTroubleshootingEpic Games
Working With Legacy SystemsMedium

Tests your ability to modernize and safely evolve existing backend systems.

challengeslegacy systemsEpic Games
SQL Optimization TechniquesMedium

Tests your knowledge of indexing, query plans, and performance tuning in production databases.

Window FunctionsJoinsAggregationsEpic Games
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Hands-on SQL practiceWrite and run real queries in the editor. 3 drills · ~30 min
SQL ExperienceMedium
Practice
Practice drill

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

experienceJoinsCase WhenNational IndemnityDayforceAvalara
SQL and Tableau UsageMedium
Practice
Practice drill

Summarize each analyst's SQL activity and Tableau asset usage with joins, aggregations, and CASE classification.

analytics toolsexperienceJoinsDatadog
Debug and Optimize SQLHard
Practice
Practice drill

Debug and optimize a PostgreSQL aggregation over millions of invoice and line-item records.

database optimizationJoinsperformanceIntuit
The finish line: interview-readyComplete all 50 questions plus 3 hands-on drills to finish this plan.