FDJ UNITED Software Engineer Interview Questions

The questions to prepare for a FDJ UNITED Software Engineer interview. Questions from real interview reports rank first. Updated daily.

12questions

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Technical FundamentalsStart here. 4 questions · ~32 min

Assess ability to evaluate messaging systems and make informed choices.

Spring Boot Production OptimizationsMedium

Evaluates practical performance tuning and reliability improvements in Spring Boot apps.

spring bootoptimizationproductionFFDJ UNITED

Walk Through a Technical ChallengeMedium

Assesses problem-solving approach and ability to articulate technical decisions.

technical challengeProblem SolvingimplementationFFDJ UNITED

Explain Core Principles of Java in ConcurrencyMedium

Tests understanding of Java fundamentals and how they enable high-concurrency systems.

javaconcurrencyFFDJ UNITED

System Design4 questions · ~32 min

Tests system design skills focused on payments, reliability, and throughput.

Evaluate Architectural Trade-offsMedium

Assesses critical thinking in architectural decision-making.

Trade-offsFFDJ UNITED

Designing Scalable API EndpointsMedium

Evaluates API design for scalability, performance, and maintainability.

system designapi designscalabilityFFDJ UNITED

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Behavioral & Leadership4 questions · ~32 min

Disagreeing on a Technical DirectionMedium

Tests conflict resolution and influence during technical disagreement, including how you challenge decisions and commit after alignment.

Influence Without AuthorityConflict ResolutionteamworkFFDJ UNITED

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The finish line: interview-readyComplete all 12 questions to finish this plan.