Top 14
Prep plan
Updated weekly · Last refresh Oct 17
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Locus Backend Engineer Interview Questions

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

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~2htotal time
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1
System DesignStart here. 8 questions · ~67 min
In-Memory Role-Based AuthHard

Assesses your system design and security reasoning for RBAC without persistent storage.

authenticationLLocus
System Design RoundHard

Evaluates your end-to-end system design process and ability to discuss trade-offs clearly.

system designLLocus
Distributed Data ConsistencyHard

Tests your approach to consistency, reliability, and failure handling in distributed systems.

distributed systemsdata consistencyLLocus
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2
Coding4 questions · ~34 min
Maps API Coordinates CodingMedium

Evaluates your practical backend coding skills and your ability to integrate with Maps APIs.

apiLLocus
Refactor for PerformanceMedium

Assesses your ability to identify bottlenecks and improve backend performance safely.

refactoringcode qualityperformanceLLocus
Third-Party API Data PipelineMedium

Evaluates your integration skills, reliability practices, and data processing design.

data processingapiintegrationLLocus
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3
More topics2 questions · ~17 min
Architecture and Database Deep DiveMedium

Assesses your communication of architecture decisions and your understanding of database concepts.

database designarchitectureLLocus
Handling Error StatesMedium

Tests your debugging mindset and your ability to design robust error handling in backend code.

error handlingCommunicationtechnical experienceLLocus
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