ZorixOS
49+ Coupang questions

Coupang interview questions and how to prepare

The questions candidates report from Coupang interviews, sorted by how often they come up, with difficulty and topics, plus original practice written in Coupang's interview style.

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ZorixOS tracks 49 community-reported Coupang interview questions, drawn from an open-source dataset of real interview reports and sorted by how frequently each one comes up. Every question links to its source. Alongside them are 98 original ZorixOS practice questions written in Coupang's known interview style (not claimed as asked at Coupang), so you can rehearse the real format. Practice any of them out loud in a free AI mock interview tuned to Coupang.

Updated July 2026

Coupang interview questions candidates report

Community-reported from real Coupang interviews (open-source dataset), most-asked first. Showing 49. Each links to its source.

  1. LFU Cache
    Hash TableLinked ListDesignDoubly-Linked List
    Hard100% asked
  2. Shopping Offers
    ArrayDynamic ProgrammingBacktrackingBit Manipulation
    Medium100% asked
  3. Shortest Bridge
    ArrayDepth-First SearchBreadth-First SearchMatrix
    Medium100% asked
  4. Subsets
    ArrayBacktrackingBit Manipulation
    Medium100% asked
  5. Word Break
    ArrayHash TableStringDynamic Programming
    Medium100% asked
  6. Decode String
    StringStackRecursion
    Medium98% asked
  7. LRU Cache
    Hash TableLinked ListDesignDoubly-Linked List
    Medium97% asked
  8. Longest Substring with At Most K Distinct Characters
    Hash TableStringSliding Window
    Medium96% asked
  9. Course Schedule
    Depth-First SearchBreadth-First SearchGraphTopological Sort
    Medium94% asked
  10. Find K Closest Elements
    ArrayTwo PointersBinary SearchSliding Window
    Medium94% asked
  11. Remove K Digits
    StringStackGreedyMonotonic Stack
    Medium94% asked
  12. Design In-Memory File System
    Hash TableStringDesignTrie
    Hard94% asked
  13. Find Pivot Index
    ArrayPrefix Sum
    Easy93% asked
  14. Range Module
    DesignSegment TreeOrdered Set
    Hard93% asked
  15. Split BST
    TreeBinary Search TreeRecursionBinary Tree
    Medium93% asked
  16. Design Twitter
    Hash TableLinked ListDesignHeap (Priority Queue)
    Medium90% asked
  17. Unique Paths II
    ArrayDynamic ProgrammingMatrix
    Medium90% asked
  18. Design Hit Counter
    ArrayBinary SearchDesignQueue
    Medium86% asked
  19. Wildcard Matching
    StringDynamic ProgrammingGreedyRecursion
    Hard86% asked
  20. Possible Bipartition
    Depth-First SearchBreadth-First SearchUnion FindGraph
    Medium85% asked
  21. Regular Expression Matching
    StringDynamic ProgrammingRecursion
    Hard85% asked
  22. Unique Paths
    MathDynamic ProgrammingCombinatorics
    Medium85% asked
  23. Snapshot Array
    ArrayHash TableBinary SearchDesign
    Medium83% asked
  24. Longest Repeating Substring
    StringBinary SearchDynamic ProgrammingRolling Hash
    Medium76% asked
  25. Find Median from Data Stream
    Two PointersDesignSortingHeap (Priority Queue)
    Hard75% asked
  26. Longest Duplicate Substring
    StringBinary SearchSliding WindowRolling Hash
    Hard75% asked
  27. Longest Substring Without Repeating Characters
    Hash TableStringSliding Window
    Medium75% asked
  28. Number of Distinct Islands
    Hash TableDepth-First SearchBreadth-First SearchUnion Find
    Medium75% asked
  29. Basic Calculator II
    MathStringStack
    Medium72% asked
  30. Number of Islands
    ArrayDepth-First SearchBreadth-First SearchUnion Find
    Medium72% asked
  31. Search a 2D Matrix
    ArrayBinary SearchMatrix
    Medium72% asked
  32. Single Element in a Sorted Array
    ArrayBinary Search
    Medium72% asked
  33. Cheapest Flights Within K Stops
    Dynamic ProgrammingDepth-First SearchBreadth-First SearchGraph
    Medium63% asked
  34. Group Anagrams
    ArrayHash TableStringSorting
    Medium63% asked
  35. Sliding Window Maximum
    ArrayQueueSliding WindowHeap (Priority Queue)
    Hard63% asked
  36. Basic Calculator III
    MathStringStackRecursion
    Hard61% asked
  37. Bus Routes
    ArrayHash TableBreadth-First Search
    Hard61% asked
  38. Increasing Triplet Subsequence
    ArrayGreedy
    Medium61% asked
  39. Maximum Number of Tasks You Can Assign
    ArrayTwo PointersBinary SearchGreedy
    Hard61% asked
  40. Number of Atoms
    Hash TableStringStackSorting
    Hard61% asked
  41. Open the Lock
    ArrayHash TableStringBreadth-First Search
    Medium61% asked
  42. Pacific Atlantic Water Flow
    ArrayDepth-First SearchBreadth-First SearchMatrix
    Medium61% asked
  43. Search a 2D Matrix II
    ArrayBinary SearchDivide and ConquerMatrix
    Medium61% asked
  44. Basic Calculator
    MathStringStackRecursion
    Hard53% asked
  45. Buildings With an Ocean View
    ArrayStackMonotonic Stack
    Medium53% asked
  46. Distinct Subsequences
    StringDynamic Programming
    Hard53% asked
  47. Kth Largest Element in an Array
    ArrayDivide and ConquerSortingHeap (Priority Queue)
    Medium53% asked
  48. Reorganize String
    Hash TableStringGreedySorting
    Medium53% asked
  49. Split Strings by Separator
    ArrayString
    Easy53% asked

Practice questions in Coupang's style

Original ZorixOS questions written the way Coupang interviews, so you rehearse the real format. Not claimed as asked at Coupang.

  1. Imagine Coupang's same day delivery system for fresh groceries. How would you design a system to ensure that a driver can pick up multiple orders from different sellers in a warehouse and deliver them efficiently to customers within a 2 hour window? Consider real time updates and potential bottlenecks.

    Software EngineerSystem DesignTests: Evaluates system design capabilities, especially for complex logistics and real time constraints.

  2. Coupang Eats receives a surge of orders during dinner time. You notice that the average delivery time for orders placed between 6 PM and 8 PM has increased by 15% over the past month. What are the potential causes, and how would you go about debugging this issue in the backend system?

    Software EngineerDebuggingTests: Assesses debugging skills in a high traffic scenario and ability to identify root causes in a distributed system.

  3. We are building a new feature for Coupang Fresh that allows users to pre order items that will be available next week. Describe the data structures and algorithms you would use to efficiently manage inventory availability and customer pre orders, considering the possibility of oversubscription.

    Software EngineerCoding ReasoningTests: Tests understanding of data structures and algorithms for inventory management and resource allocation problems.

  4. Coupang is expanding its Rocket Delivery service to new cities in South Korea. How would you approach designing the microservices architecture to support this expansion, ensuring scalability, reliability, and low latency for a rapidly growing user base and order volume?

    Software EngineerSystem DesignTests: Probes system design for large scale, distributed applications and ability to plan for future growth.

  5. You are optimizing the search ranking algorithm for Coupang. How would you determine if a change to the algorithm has improved the relevance of search results for users looking for specific product categories like 'electronics' or 'fashion'?

    Software EngineerCoding ReasoningTests: Evaluates algorithmic thinking and ability to define and measure success for complex search systems.

  6. Consider the Coupang platform. If we were to introduce a new payment option, say cryptocurrency, what are the key technical challenges you foresee in integrating it securely and efficiently, especially concerning transaction processing and fraud prevention?

    Software EngineerSystem DesignTests: Tests understanding of system integration, security considerations, and handling new payment technologies at scale.

92+ more Coupang-style questions are in the free library, each practiceable live with adaptive follow-ups and an honest scorecard. Start free.

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Coupang Interview Questions (2026) | ZorixOS