PhonePe - Hinglish guide

PhonePe interview questions - Hinglish guide

PhonePe ke interviews mein machine coding aur DSA dono eliminatory report hote hain. Yahan dono ki taiyari hai, UPI ke context ke saath.

Bhasha:EnglishHinglish

PhonePe ke baare mein

PhonePe India ka bada digital payments app hai, khaaskar UPI payments ke liye. Engineering roles mein bade scale, reliability aur fast transactions ke problems hote hain.

Is guide mein PhonePe interview questions in Hindi (Hinglish) hain - 13 sawaal, har ek ke saath interviewer kya check karta hai aur kaise answer karein. Saath mein PhonePe interview process round-wise, freshers ke liye 7 din ka taiyari plan, tips aur galtiyan jo nahi karni.

PhonePe ka hiring process

  1. Machine coding

    Kabhi live ~2 ghante, kabhi take-home - modular code, in-memory storage aur test cases.

  2. DSA

    Medium se medium-hard - graphs, stacks, sets; complexity par baat.

  3. Design aur hiring manager

    Low-level/system design, resume ki gehrai, CS basics aur behavioural.

PhonePe apna process publish nahi karta. Yeh jaankari zyada-tar experienced candidates ke reports se hai - freshers ka process alag ho sakta hai. Recruiter se confirm karein.

Sources (checked 16 October 2026): PhonePe Careers. Hiring process badalta rehta hai - apply karne se pehle official notice zaroor padhein.

PhonePe interview questions aur answers

Machine coding aur design

  1. 1.Machine coding: vehicle rental service banao.

    Interviewer kya check kar raha hai
    Reports mein aaya - OOP, modular code aur tests.
    Kaise answer karein
    Branch, Vehicle (type), Booking. Add branch/vehicle, book (time slot), available vehicles dikhana. In-memory store, service layer alag, aur kuch test cases. Pehle 15 minute requirements clear karo.

  2. 2.UPI payment ka flow high level par samjhao.

    Interviewer kya check kar raha hai
    Domain ki samajh.
    Kaise answer karein
    User app → apne bank/PSP → NPCI (switch) → receiver ka bank → confirmation wapas. Har step par status aur failure handling.

  3. 3.Payment app mein double debit kaise rokoge?

    Interviewer kya check kar raha hai
    Reliability.
    Kaise answer karein
    Unique transaction ID, idempotent processing, aur status reconciliation - retry se dobara charge na ho.

DSA

  1. 4.Histogram mein sabse bada rectangle.

    Interviewer kya check kar raha hai
    Stack - medium-hard.
    Kaise answer karein
    Monotonic stack mein indices; chhota bar aane par pop karke area nikalo. O(n).

  2. 5.Kitne alag groups (connected components) hain?

    Interviewer kya check kar raha hai
    Union-Find / DFS.
    Kaise answer karein
    Union-Find se jodo ya DFS se gino; Union-Find mein path compression.

  3. 6.Longest consecutive sequence (unsorted array).

    Interviewer kya check kar raha hai
    Hash set ka smart use.
    Kaise answer karein
    Set banao; sirf woh number shuru karo jiska (x-1) set mein nahi; aage gino. O(n).

SQL, Linux aur hiring manager

  1. 7.SQL: har user ke roz ke transactions gino.

    Interviewer kya check kar raha hai
    Data ki practical samajh.
    Kaise answer karein
    GROUP BY user_id, DATE(created_at) ke saath COUNT(*).

  2. 8.Linux mein kaun-sa process zyada CPU/memory le raha hai, kaise dekhoge?

    Interviewer kya check kar raha hai
    Production debugging.
    Kaise answer karein
    top ya htop; ps aux --sort=-%mem; aur log files ke liye tail -f.

  3. 9.Apne project mein ek design decision aur uska trade-off batao.

    Interviewer kya check kar raha hai
    Soch ki gehrai.
    Kaise answer karein
    Kya choose kiya, kya alternative tha, aur kyun - jaise SQL vs NoSQL.

Aur sawaal

  1. 10.Daily transaction limit kaise implement karoge?

    Interviewer kya check kar raha hai
    Payments business rule.
    Kaise answer karein
    User aur din ke hisaab se total rakho (cache/DB mein); naya transaction aane par check, atomic update.

  2. 11.Graph mein cycle detect karo (undirected).

    Interviewer kya check kar raha hai
    Graphs.
    Kaise answer karein
    DFS mein parent ke alawa visited node mile to cycle; ya Union-Find mein same parent.

  3. 12.Read-heavy system mein cache kahan lagaoge?

    Interviewer kya check kar raha hai
    Design soch.
    Kaise answer karein
    Baar-baar padhe jaane wale data (jaise merchant details) ke liye - TTL aur update par invalidate.

  4. 13.Machine coding mein requirements unclear ho to?

    Interviewer kya check kar raha hai
    Process.
    Kaise answer karein
    Pehle 10-15 minute sawaal poochho, assumptions likho, aur unhe interviewer se confirm karo.

PhonePe interview ke liye 7 din ka taiyari plan

  1. Din 1: Ek machine coding problem 2 ghante mein (rental/parking).
  2. Din 2: Stack problems - histogram, next greater.
  3. Din 3: Graphs - Union-Find, BFS/DFS.
  4. Din 4: Doosra machine coding problem, tests ke saath.
  5. Din 5: SQL aur Linux commands.
  6. Din 6: UPI/payments flow aur project trade-offs.
  7. Din 7: Mock DSA round aur revision.

Taiyari ke tips

  • Machine coding mein pehle requirements clear karo, phir core flow, phir tests.
  • Code modular rakho - har class ka ek kaam.
  • SQL aur basic Linux commands bhi taiyaar rakho.
  • Har round eliminatory report hua hai - har round ko final samjho.

Ye galtiyan mat karna

  • Machine coding mein requirements clear kiye bina code shuru karna.
  • Ek badi class mein sab likh dena - modularity zaroori hai.
  • Tests ke liye time na bachana.

Aksar poochhe jaane wale sawaal

PhonePe machine coding round kaisa hota hai?

Reports mein kabhi live ~2 ghante, kabhi take-home - modular code aur test cases par zor.

PhonePe DSA kitna mushkil hai?

Commonly medium se medium-hard - graphs, stacks, sets.

Kya SQL aur Linux poochha jaata hai?

Kuch reports mein SQL aur Linux ke sawaal prominently aaye hain.

Kya yeh freshers ke liye bhi hai?

Zyada reports experienced hires ke hain - fresher process recruiter se confirm karein.

Isi tarah ki companies - Product aur internet companies

Aur company guides

Aage padhein

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