Coupang Software Engineer Interview Questions

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

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CodingStart here. 24 questions · ~229 min

Merge two sorted arrays into one sorted array using a two-pointer linear scan.

Longest Palindrome FunctionMedium

Practice

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

Dynamic ProgrammingStringsTwo Pointers

Coupang

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

Coupang

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Execution3 questions · ~29 min

Improve Page Load TimeMedium

Tests systematic performance investigation and web latency optimization at a high-traffic e-commerce site.

Trade-offsSuccess CriteriaRisk Assessment

Coupang

Design URL Shortening ServiceHard

Tests system design skills for a high-availability, scalable web service.

Trade-offsSuccess CriteriaRisk Assessment

Coupang

Design for Millions of TPSHard

Tests system design skills for high-throughput workloads, including scalability and reliability tradeoffs.

Trade-offsRoadmappingRisk Assessment

Coupang

Behavioral & Leadership21 questions · ~200 min

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