Paytm (One97 Communications Limited) interview experience Real time questions & tips from candidates to crack your interview
SDE - 1
Paytm (One97 Communications Limited)
3 rounds | 3 Coding
problems
Selected Interview preparation journey
Journey
Keep Practicing, be motivated and be ready to face the rejection and learn from them. I was planning to switch my job from few months in Data Engineering. Than I applied in Paytm and get selected as Data Engineer.
Application story
I applied on the Paytm Job Portal where it was asking for Data Engineer having 2 - 3 years of experience. After 1 week I got a call from recruiter of Paytm and they schedule the interviews within 1 week.
Why selected/rejected for the role?
I got selected because of my problem solving skills in DSA and have required knowledge of Spark, Hadoop.
Preparation
Duration: 5 months
Topics: Data Structures and Algorithms, Java, Spark, Hadoop, AWS, Hive
Tip 1 : Keep your basics clears and do practice DSA questions
Tip 2 : Learn from your previous interviews.
Application process
Where: Other
Eligibility: Data Engineer experience
Tip 1: Have experience in the work you are applying like previous company or any projects.
Tip 2: specify your skills and your coding profile in the resume
Interview rounds
01
Round
Easy
Video Call
Duration60 minutes
Interview date11 Dec 2021
Coding problem1
We have any Interview call on meet call around 11 am. Interview was very good as I was able to solve the question.
1. All Prime Numbers less than or equal to N
Moderate
10m average time
90% success
0/80
Asked in companies
You are given a positive integer 'N'. Your task is to return all the prime numbers less than or equal to the 'N'.
Note:
1) A prime number is a number that has only two factors: 1 and the number itself.
2) 1 is not a prime number.
Problem approach
1. I explain the naĂŻve approach and interviewer ask to optime it.
2. then I tell him that we have to iterate till root to the value.
02
Round
Medium
Video Call
Duration40 minutes
Interview date16 Feb 2023
Coding problem1
1. Maximum Subarray Sum
Moderate
25m average time
75% success
0/80
Asked in companies
Given an array of numbers, find the maximum sum of any contiguous subarray of the array.
For example, given the array [34, -50, 42, 14, -5, 86], the maximum sum would be 137, since we would take elements 42, 14, -5, and 86.
Given the array [-5, -1, -8, -9], the maximum sum would be -1.
Follow up: Do this in O(N) time.
Problem approach
i done using the Kadane's algorithm
03
Round
Easy
HR Round
Duration30 minutes
Interview date21 Feb 2023
Coding problem1
1. Basic Hr Questions
Introduce your self, why do you want to join the comany
Here's your problem of the day 
Solving this problem will increase your chance to get selected in this company
Skill covered: Programming
To make an AI less repetitive in a long paragraph, you should increase:
Choose another skill to practice
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