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OpenAI Backend Engineer Interview Questions

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

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Track User KPIs Across FunnelsMedium

Assesses data modeling and system design for KPI tracking across product funnels.

system designdata storage
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A/B Testing Backend Architecture
Hard

Evaluates ability to design experimentation infrastructure with correctness and low overhead.

scalabilityA/B Testing
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Scale for Sudden 10x Traffic Surge
Hard

Tests capacity planning and scaling strategies for sudden load increases.

scalability
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Recursive Optimization Without OverflowHard

Tests ability to optimize recursive logic and prevent stack overflow in production code.

Recursionperformanceoptimization
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Graph Problems With Hints
Hard

Evaluates readiness to tackle graph algorithm questions under interview constraints.

Problem SolvingGraphs
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Edge Cases in String Manipulation
Medium

Evaluates careful handling of tricky inputs and correctness in string algorithms.

string manipulationedge casesimplementation
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Low-Latency Data Processing Pipeline
Hard

Evaluates performance tuning and pipeline design for low-latency backend processing.

latencydata processingoptimization
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Efficient Pattern Mining From API Logs
Medium

Tests ability to design efficient log analytics for identifying common request patterns.

Data Analysisefficiency
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