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Navan Backend Engineer Interview Questions

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

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Time vs Space Complexity TradeoffsEasy

Explain how to compare time and space complexity tradeoffs and justify when extra memory is worth faster runtime.

MathSortingGreedy
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Navan
Grid Paths With Moves
Medium

Tests dynamic programming and combinatorics for an algorithmic grid-paths problem.

dfsMatrix
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Navan
AI-Assisted Data Processing
Medium

Evaluates how you apply AI-assisted coding tools to deliver correct, maintainable backend solutions.

data processingimplementation
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Navan
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Real-Time Fraud Detection SystemHard

Tests distributed system design for low-latency fraud detection with scalability and reliability.

fraud detectiondistributed systems
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Navan
Data Consistency in Microservices
Medium

Evaluates strategies for maintaining consistency across microservices in a transactional travel workflow.

data consistencymicroservices
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Navan
Monitoring and Alerting for Backends
Medium

Tests your ability to design actionable observability and alerting for reliable backend operations.

monitoringalerting
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Navan
Global Notification Service at Scale
Hard

Assesses system design for high-scale, globally distributed notifications with delivery guarantees.

scalabilityarchitecture
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Navan

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Technical Trade-off Under Deadline
Easy

Tests prioritization and decision-making under pressure, especially how you balance speed, quality, and long-term technical cost.

Decision MakingTrade-offsstar
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Navan
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