Coupang Software Engineer Interview Questions

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

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CodingStart here. 21 questions · ~199 min

Find the longest palindromic substring in F5 BIG-IP telemetry using Manacher's algorithm in linear time.

Detect Cycle in Linked ListEasy

Practice

Use Floyd’s two-pointer algorithm to determine whether a singly linked list contains a cycle.

Hash TablesLinked ListsTwo Pointers

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Pipelines3 questions · ~28 min

Approach for handling missing, inconsistent, and duplicate data in a pipeline without breaking downstream analytics.

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System Design11 questions · ~104 min

Seller Product Upload SystemHard

Evaluates system design for seller onboarding and reliable product ingestion workflows.

vendor management

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Testing and Deep Dive Recommendation EngineHard

Evaluates end-to-end evaluation rigor and technical depth in recommendation model implementation.

Model EvaluationRecommendation Systems

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Execution5 questions · ~47 min

High-Level Design and Trade-OffsMedium

Evaluates ownership, trade-off reasoning, and continuous improvement mindset.

Trade-offs

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Behavioral & Leadership7 questions · ~66 min

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