ZorixOS
93+ PhonePe questions

PhonePe interview questions and how to prepare

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

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ZorixOS tracks 93 community-reported PhonePe 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 77 original ZorixOS practice questions written in PhonePe's known interview style (not claimed as asked at PhonePe), so you can rehearse the real format. Practice any of them out loud in a free AI mock interview tuned to PhonePe.

Updated July 2026

PhonePe interview questions candidates report

Community-reported from real PhonePe interviews (open-source dataset), most-asked first. Showing 60 of 93. Each links to its source.

  1. Count the Number of Arrays with K Matching Adjacent Elements
    MathCombinatorics
    Hard100% asked
  2. Frequencies of Shortest Supersequences
    ArrayStringBit ManipulationGraph
    Hard100% asked
  3. Frog Jump
    ArrayDynamic Programming
    Hard100% asked
  4. Maximum Amount of Money Robot Can Earn
    ArrayDynamic ProgrammingMatrix
    Medium100% asked
  5. Burst Balloons
    ArrayDynamic Programming
    Hard94% asked
  6. Decoded String at Index
    StringStack
    Medium91% asked
  7. Maximum Tastiness of Candy Basket
    ArrayBinary SearchGreedySorting
    Medium87% asked
  8. Simple Bank System
    ArrayHash TableDesignSimulation
    Medium87% asked
  9. Smallest Range Covering Elements from K Lists
    ArrayHash TableGreedySliding Window
    Hard87% asked
  10. Find Beautiful Indices in the Given Array II
    Two PointersStringBinary SearchRolling Hash
    Hard85% asked
  11. Viewers Turned Streamers
    Database
    Hard85% asked
  12. Check if Point Is Reachable
    MathNumber Theory
    Hard84% asked
  13. Smallest String With Swaps
    ArrayHash TableStringDepth-First Search
    Medium84% asked
  14. Remove K Digits
    StringStackGreedyMonotonic Stack
    Medium79% asked
  15. Most Stones Removed with Same Row or Column
    Hash TableDepth-First SearchUnion FindGraph
    Medium76% asked
  16. Bus Routes
    ArrayHash TableBreadth-First Search
    Hard76% asked
  17. Longest Palindromic Substring
    Two PointersStringDynamic Programming
    Medium72% asked
  18. Trapping Rain Water
    ArrayTwo PointersDynamic ProgrammingStack
    Hard72% asked
  19. Kth Smallest Element in a Sorted Matrix
    ArrayBinary SearchSortingHeap (Priority Queue)
    Medium72% asked
  20. Matchsticks to Square
    ArrayDynamic ProgrammingBacktrackingBit Manipulation
    Medium72% asked
  21. Split Array into Consecutive Subsequences
    ArrayHash TableGreedyHeap (Priority Queue)
    Medium72% asked
  22. Candy
    ArrayGreedy
    Hard68% asked
  23. Frequency of the Most Frequent Element
    ArrayBinary SearchGreedySliding Window
    Medium68% asked
  24. House Robber
    ArrayDynamic Programming
    Medium68% asked
  25. House Robber II
    ArrayDynamic Programming
    Medium68% asked
  26. Split Array Largest Sum
    ArrayBinary SearchDynamic ProgrammingGreedy
    Hard68% asked
  27. Best Time to Buy and Sell Stock
    ArrayDynamic Programming
    Easy67% asked
  28. Maximum Profit in Job Scheduling
    ArrayBinary SearchDynamic ProgrammingSorting
    Hard67% asked
  29. Queue Reconstruction by Height
    ArrayBinary Indexed TreeSegment TreeSorting
    Medium67% asked
  30. Amount of Time for Binary Tree to Be Infected
    Hash TableTreeDepth-First SearchBreadth-First Search
    Medium63% asked
  31. IPO
    ArrayGreedySortingHeap (Priority Queue)
    Hard63% asked
  32. Koko Eating Bananas
    ArrayBinary Search
    Medium63% asked
  33. Reachable Nodes In Subdivided Graph
    GraphHeap (Priority Queue)Shortest Path
    Hard63% asked
  34. Evaluate Division
    ArrayStringDepth-First SearchBreadth-First Search
    Medium62% asked
  35. Find Duplicate Subtrees
    Hash TableTreeDepth-First SearchBinary Tree
    Medium62% asked
  36. Make Lexicographically Smallest Array by Swapping Elements
    ArrayUnion FindSorting
    Medium62% asked
  37. Maximum Performance of a Team
    ArrayGreedySortingHeap (Priority Queue)
    Hard62% asked
  38. Sliding Window Maximum
    ArrayQueueSliding WindowHeap (Priority Queue)
    Hard62% asked
  39. Ways to Make a Fair Array
    ArrayPrefix Sum
    Medium62% asked
  40. Jump Game II
    ArrayDynamic ProgrammingGreedy
    Medium62% asked
  41. Longest Continuous Subarray With Absolute Diff Less Than or Equal to Limit
    ArrayQueueSliding WindowHeap (Priority Queue)
    Medium62% asked
  42. Sum of Distances in Tree
    Dynamic ProgrammingTreeDepth-First SearchGraph
    Hard62% asked
  43. Best Time to Buy and Sell Stock III
    ArrayDynamic Programming
    Hard56% asked
  44. Distribute Coins in Binary Tree
    TreeDepth-First SearchBinary Tree
    Medium56% asked
  45. House Robber III
    Dynamic ProgrammingTreeDepth-First SearchBinary Tree
    Medium56% asked
  46. Maximal Square
    ArrayDynamic ProgrammingMatrix
    Medium56% asked
  47. Minimum Cost to Cut a Stick
    ArrayDynamic ProgrammingSorting
    Hard56% asked
  48. Rotting Oranges
    ArrayBreadth-First SearchMatrix
    Medium56% asked
  49. Sort Colors
    ArrayTwo PointersSorting
    Medium56% asked
  50. Swim in Rising Water
    ArrayBinary SearchDepth-First SearchBreadth-First Search
    Hard56% asked
  51. Word Ladder
    Hash TableStringBreadth-First Search
    Hard56% asked
  52. Accounts Merge
    ArrayHash TableStringDepth-First Search
    Medium55% asked
  53. Merge Intervals
    ArraySorting
    Medium55% asked
  54. Alien Dictionary
    ArrayStringDepth-First SearchBreadth-First Search
    Hard47% asked
  55. Apply Operations to Maximize Frequency Score
    ArrayBinary SearchSliding WindowSorting
    Hard47% asked
  56. Best Time to Buy and Sell Stock II
    ArrayDynamic ProgrammingGreedy
    Medium47% asked
  57. Complete Binary Tree Inserter
    TreeBreadth-First SearchDesignBinary Tree
    Medium47% asked
  58. Copy List with Random Pointer
    Hash TableLinked List
    Medium47% asked
  59. Course Schedule II
    Depth-First SearchBreadth-First SearchGraphTopological Sort
    Medium47% asked
  60. Daily Temperatures
    ArrayStackMonotonic Stack
    Medium47% asked

These are the 60 most-reported of 93 tracked PhonePe questions. Create a free account to drill the full set with solutions and an AI interviewer.

Practice questions in PhonePe's style

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

  1. Imagine you need to design a system to handle 10 million concurrent UPI transactions per second during peak Indian festival seasons. Describe your approach to ensuring high availability, low latency, and fault tolerance. Consider the distributed nature of such a system.

    Software EngineerSystem DesignTests: Evaluates system design thinking, understanding of distributed systems, and ability to handle extreme scale.

  2. PhonePe's payment gateway experiences millions of requests daily. If a user reports that their UPI payment is stuck in a 'pending' state for an unusually long time, how would you debug this issue in a production environment? Walk me through your diagnostic steps.

    Software EngineerDebuggingTests: Assesses debugging skills, familiarity with distributed system observability, and problem-solving under pressure.

  3. Given the following simplified database schema for PhonePe's merchant transactions (merchant_id, transaction_id, amount, timestamp, status, payment_method), write a SQL query to find the top 5 merchants by total transaction amount for the last 30 days, grouped by payment method.

    Data ScientistSQLTests: Tests SQL proficiency and ability to extract specific business insights from data.

  4. PhonePe is considering introducing a new feature for instant loan disbursals directly within the app. As a Product Manager, outline the key success metrics you would track for this feature in the first six months post-launch. Justify your choices.

    Product ManagerMetricsTests: Evaluates understanding of product metrics, ability to define success, and alignment with business goals.

  5. PhonePe's user base spans a wide demographic in India. How would you approach designing the user interface for a new bill payment feature to cater to both digitally savvy urban users and less tech-familiar rural users simultaneously?

    Product DesignerUI/UX DesignTests: Assesses user empathy, understanding of diverse user needs, and ability to create inclusive designs.

  6. PhonePe has a significant market share in digital payments in India. Describe a marketing campaign you would propose to increase user adoption of PhonePe's 'Switch' feature, which allows users to switch between different financial apps. What channels would you prioritize?

    MarketingMarketing StrategyTests: Tests marketing strategy formulation, channel selection, and understanding of user acquisition.

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

Keep exploring

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PhonePe Interview Questions (2026) | ZorixOS