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Updated weekly · Last refresh Sep 25

OpenAI Frontend Engineer Interview Questions

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

18questions
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1
System DesignStart here. 11 questions · ~109 min
Design a Webhook SystemHard

Design a reliable webhook delivery system with retries, ordering, security, observability, and optional anomaly detection.

distributed systemsnotification systemapi gatewayOpenAI
ChatGPT-like Product in Text AreaHard

Design the end-to-end ChatGPT text-area experience, including model serving, conversation storage, and database choices.

database accessdesignml inferenceOpenAI
ChatGPT-like Interface FrontendHard

Design a ChatGPT-like frontend, API contract, and conversation data model with reliable model-serving integration.

backend integrationclient-sideapi gatewayOpenAI
Design a Text-Area Chat UIHard

Design an embedded ChatGPT-like text-area assistant, including inference flow, persistence, database choice, and reliability tradeoffs.

database accessinference latencyml inferenceOpenAI
Real-Time Chat UI DesignHard

Design a low-latency chat update system that uses ML to prioritize high-frequency events without degrading interface performance.

high-frequency requestslatencyperformanceOpenAI
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2
Behavioral & Leadership5 questions · ~49 min
Leading an Adaptive Interface DecisionMedium

Tests how you lead through ambiguity on an adaptive interface problem, influence cross-functional partners, and own trade-offs through delivery.

visual designvehicle interfacecontext awarenessOpenAI
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3
More topics2 questions · ~20 min
Optimize Bundle Size and LoadHard
Practice

Compute initial, shared, and lazy JavaScript bundles from module dependencies while minimizing duplicate downloads.

cachingcode structureAlgorithmsOpenAI
Refactor Legacy FrontendMedium
Practice

Refactor component-tree traversal with iterative depth-first search to improve maintainability and avoid recursion limits.

refactoringCodingclean codeOpenAI

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