One97 Communications

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Vijay Shekhar Sharma
49 Ratings
  • 1 person found this helpful  

    I shouldn't have left at all!

    • Comp & Benefits
    • Work/Life Balance
    • Senior Management
    • Culture & Values
    • Career Opportunities
    Former Employee - Senior Software Engineer in Noida (India)
    Former Employee - Senior Software Engineer in Noida (India)

    I worked at One97 Communications full-time (more than a year)


    There is so much in life that counts - a lesson I have learnt AFTER leaving Paytm. If I had not been so swayed at that moment, I would have been enjoying these: a super friendly environment! We could just think up anything - whether related to work, or an event that we wanted held, which I term as extra-curricular activities - and just go ahead an do it! We were always encouraged. At anytime during my 2 year stay, I never felt that my designation mattered. If in a meeting I would suggest an idea, I would get as much credit for it as a senior would get. I miss these things now.


    Well, I think sometimes the company moves with such a speed that people are left without the knowledge of what's happening or where they are heading. By the time the management addresses the people, things have moved even further ahead.

    Advice to ManagementAdvice

    I would say, talk to the people more often!

    Positive Outlook
    Approves of CEO

One97 Communications Interviews

Updated Jan 22, 2015
Updated Jan 22, 2015

Interview Experience

Interview Experience


Getting an Interview

Getting an Interview


Interview Difficulty


Interview Difficulty




    Software Engineer Interview

    Anonymous Employee
    Anonymous Employee
    Interview Details

    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
    No Offer

One97 Communications Awards & Accolades

Something missing? Add an award
Gold Award for mCommerce, MMA Smarties India, 2013
Best Mobile Wallet Program (Mobile Payments Category), Knowledgefaber Awards, 2013
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Additional Info

Unlock Profile
Headquarters Noida, India
Size 500 to 999 Employees
Founded 2010
Type Company - Private
Industry Telecommunications
Revenue $2 to $5 billion (USD) per year

One97 Communications Ltd. is India’s leading mobile internet
company. It runs Paytm, India’s largest digital goods
marketplace. Today, One97, is India’s largest digital goods seller on mobiles.

Headquartered in New Delhi, One97 is more than a 1,000 people strong team with regional offices in Mumbai, Pune, Chennai, Bangalore & Kolkata with global presence in Africa, Europe, Middle East and South East Asia.

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