Paytm (One97 Communications Limited) interview experience Real time questions & tips from candidates to crack your interview
Business Analyst
Paytm (One97 Communications Limited)
3 rounds | 8 Coding
problems
Selected Interview preparation journey
Preparation
Duration: 12 Months
Topics: SQL , Python, Machine Learning, Statistics, Guestimates, Probability, Puzzles
Tip 1 : Do prepare well for SQL ..for theory concepts learn from W3SCHOOLS and practice it from Hackerrank.
Tip 2 : Try to do one end to end Machine learning project.
Tip 3 : Apart from technical, business understanding is also important so read some business case study and solve guestimates.
Application process
Where: Other
Eligibility: No criteria
Tip 1 : Mention your GitHub profile
Tip 2 : Project related to machine learning can definitely help you in shortlisted.
Interview rounds
01
Round
Medium
Video Call
Duration60 Minutes
Interview date1 May 2021
Coding problem2
Interview was in afternoon.
The interviewer was very polite and clearly explained me each and every detail about the questions.
1. Sum Of Squares Of First N Natural Numbers
Easy
15m average time
85% success
0/40
Asked in companies
You are given an integer 'N'. You need to find the sum of squares of the first 'N' natural numbers.
For example:
If 'N' = 4. You need to return 1^2 + 2^2 + 3^2 + 4^2 = 30.
2. Technical Questions
Given a dataframe ..how to filter the and aggregate the data using pandas
What is linear Regression and assumptions
02
Round
Medium
Video Call
Duration30 minutes
Interview date7 May 2021
Coding problem3
Interview was in the afternoon.
Interviewer was very friendly.
1. DBMS Question
What is the order of execution of sql clause.
2. DBMS Question
Finding the count of visitors that came today and count of new visitors that come today
3. DBMS Question
Find the Department wise highest salary of the employees.
03
Round
Medium
Video Call
Duration90 Minutes
Interview date12 May 2021
Coding problem3
Interview held in the evening.
There were two interviewer.
One was asking the technical questions related to sql and python and other related to business case study and Machine learning.
1. DBMS Question
Find the salary of each employee per month.
2. ML Question
What is underfitting and overfitting of ML models
3. ML Question
Explain the concept of Random Forest
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
Similar interview experiences
Business Analyst
3 rounds | 5 problems
Interviewed by Paytm (One97 Communications Limited)
Selected 
1314 views
0 comments
0 upvotes
SDE - 1
2 rounds | 3 problems
Interviewed by Paytm (One97 Communications Limited)
Selected 923 views
0 comments
0 upvotes
SDE - 1
2 rounds | 5 problems
Interviewed by Paytm (One97 Communications Limited)
Rejected
716 views
0 comments
0 upvotes
SDE - 1
3 rounds | 8 problems
Interviewed by Paytm (One97 Communications Limited)
Selected 522 views
0 comments
0 upvotes