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One97 Communications Overview

Noida (India)
501 to 1000 employees
Company - Private
$2 to $5 billion (USD) per year
OnMobile, Comviva Technology, Hungama
Paytm, One97's flagship brand, is India's largest digital goods and mobile commerce platform - inspired and driven by a commitment to great consumer experience. Paytm is also a leading payment solutions provider to ecommerce merchants using its ... Read more

One97 Communications Reviews

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Vijay Shekhar Sharma
143 Ratings
  • "review of former employee"

    Former Employee - Anonymous Employee
    Former Employee - Anonymous Employee


    Excellent work environment, flexible time, location near home,


    left because moved to US

See All 218 Reviews

One97 Communications Photos

One97 Communications photo of: Our HQ
One97 Communications photo of: At Paytm, we celebrate all alike. :)
One97 Communications photo of: Special milestones celebrated with a cake.
One97 Communications photo of: Open work culture. Walk up to someone and talk it through. Even if you are the CEO, that applies. More so, if you are one. :)
One97 Communications photo of: Our core value: Urgency
One97 Communications photo of: We have real glass doors :) and open work spaces. Lots of light and transparency.
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One97 Communications Interviews



Getting an Interview

Getting an Interview




  1. Helpful (9)  

    Software Engineer Interview

    Anonymous Interview Candidate
    No Offer


    Written 1 : Technical and Aptitude.
    Written 2: Written Coding

    Written 1 was Normal Written exam based on fundamentals of Aptitude and Computer Science.

    Written 2:
    Few Questions I remembered :

    Q1 :

         char a;
         int i = 300;
         a = &i;
    Q2 :

     Imagine you have a special keyboard with the following keys:
    where CTRL+A, CTRL+C, CTRL+V each acts as one function key for “Select All”, “Copy”, and “Paste” operations respectively.
    If you can only press the keyboard for N times (with the above four keys), please write a program to produce maximum numbers of A. If possible, please also print out the sequence of keys.
    That is to say, the input parameter is N (No. of keys that you can press), the output is M (No. of As that you can produce).

    Q3 : Consider a Binary Tree not necessarily BST,Remove all nodes which don’t lie in any path with sum>= k.

    Q4: Given an array arrange it in the form a<b>c<d>e<f>g……….

    Q5 : Given an array of numbers arrange it in the form of a single number such that the concluded number is
    the maximum.
    e.g. given : 99,8,76,45,66,9,7,33,5,42
    O/P : 99987766654233

    Sectional Cut-off for O/P and Coding Questions.
    Marking was done against correct approach not the exact answers.

    Round 1 (Technical):
    Q1: How will you store 800 Million records in database.
    Q2: Data storage of double and float differs in C/C++ and Java How is it ???
    Q2: Transfer data between a program written in Java and C#.
    Q3: I need to establish a network in which I will be sure of security ,How will you proceed
    Q4: A and B are two sets Write a non nested query so that I can get the data in B but not in A.
    Q5: 000…………..? 11111111111111111111…………….? Write a Program which find the index of the
    start of series 11111111…..?.

    Round 2 (Technical):
    Q1: Give your introduction along with your technical skills.
    Q2: Explain your project “Stock Prediction”
    Q3: I want to retrieve records from a table from date 1 – 15.I don’t want to use range Queries
    Suggest the optimal solutions…
    I suggest Indexing on date column.
    He insisted on alternate ways.
    “he said what you think you can do……”
    Q4: What is Unique and NULL Constraint ?
    Difference between Primary Key and Unique.
    How many maximum records in Unique can be NULL.
    Q5: Write Most optimized algorithm for finding a Word in sentence.
    (I used Trie approach , he scolded me for not asking the sentence is sorted or not.. the used Binary search.)
    Q6: Difference between thread and process.
    What is PCB ?
    What is synchronization ??
    What is Semaphore ?
    Explain and solve Producer Consumer Problem using Semaphore ? What is Drawback here
    What is monitor ? Solve Producer Consumer Problem using Monitor and explain pros and cons.

    Final 8 candidates from Delhi region selected.

    Round 3(Final Round Managerial and Technical):
    Q1 : What you want to do in your Life ?? Discussion life as a placement coordinator ?
    What you did ? your duties ? differences you made …
    Q2 : Doing Post Market Analysis of a Stock Market of Previous Month .
    Write a Program of Stock Buy Sell to Maximize Profit.
    Q3 : Explain Cursor ? its types ? differences between them ? What to use When ?
    Q4 : Explain Matrix ? Matrix Multiplication? Difference ways of Matrix Multiplication ?Explain Both.
    Q5 : What are you doing right now ??? will you join us ?? Why ??

    Students from 30 Colleges of India are evaluated and Top 25 are offered the JOB.

    I was not one of them.

    Interview Questions

    • Difference between thread and process.
      What is PCB ?
      What is synchronization ??
      What is Semaphore ?   Answer Question
See All 76 Interviews

One97 Communications Awards & Accolades

  • Paytm Wallet gets the Best Digital Wallet Award, IAMAI’s India Digital Awards, 2015
  • Paytm App is a finalist in Consumer Trust category, International Meffys Awards, 2014
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