OLX Group interview experience Real time questions & tips from candidates to crack your interview
SDE - 1
OLX Group
4 rounds | 6 Coding
problems
Selected Interview preparation journey
Journey
My journey started in my college when I first learned to code. Then onwards, I practiced a lot from Leetcode. Along with DSA, I made sure that I knew front-end development as well as I developed an interest in that. After working for my previous company, I was looking for a job switch.
Application story
I saw an opening on LinkedIn for this job and then approached a person from this company LinkedIn and asked for a referral and i got one
Why selected/rejected for the role?
My basic concepts of all the topics were clear and I also prepared HR questions through mock interviews. I practiced all the basic to medium coding questions before the interview.
Preparation
Duration: 2 months
Topics: React, System Design, DSA, OOPS, CSS, HTML, JAVASCRIPT
Tip 1 : Focus on System Design apart from DSA
Tip 2 : Practice previous interview questions from LeetCode and CodeStudio
Tip 3 : Practice CS subjects like DBMS and OOPS
Application process
Where: Campus
Eligibility: 2 YOE
Tip 1 : Have a shot and to a point resume one page is more than enough for 0-3 years of experience
Interview rounds
01
Round
Easy
Video Call
Duration60 mins
Interview date8 Jun 2022
Coding problem2
1. Javascript Questions
What are maps in Javascript?
What are polyfills?
Write the Ployfill for Map function
Problem approach
Tip 1:Do practice JS and CSS
2. CSS Questions
How to center a div?
What is the CSS box model?
02
Round
Medium
Video Call
Duration60 mins
Interview date14 Jun 2022
Coding problem2
1. Balanced parentheses
Moderate
10m average time
90% success
0/80
Asked in companies
Given an integer ‘N’ representing the number of pairs of parentheses, Find all the possible combinations of balanced parentheses with the given number of pairs of parentheses.
Note :
Conditions for valid parentheses:
1. All open brackets must be closed by the closing brackets.
2. Open brackets must be closed in the correct order.
For Example :
()()()() is a valid parentheses.
)()()( is not a valid parentheses.
Problem approach
So I discussed an approach to solve this problem with the interviewer I gave an approach with time complexity with O(n2) solution then the interviewer told me can I improve its time-complexity then I gave a solution using stack which was of time-complexity O(n) then interviewer told me to code it after coding it he ran 4 test-cases around it and all got passed and he was happy with the solution
2. Javascript Question
Explain deep clone polyfill
03
Round
Easy
Video Call
Duration60 mins
Interview date24 Jun 2022
Coding problem1
1. Design Question
I was asked how would you build a site like quora what all things would you use?
Problem approach
It was an HLD problem I didn't have to code anything I went with my approach how would I build this what caching technique I'll use what language I'll use and why I use particular technology so questions were around that
04
Round
Easy
HR Round
Duration30 mins
Interview date7 Jul 2022
Coding problem1
1. Basic HR Questions
Basic HR questions were asked
Why do you wanna join us?
Where do you stay?
How was your interview experience with us?
Problem approach
Tip 1: Be honest and confidant
Here's your problem of the day 
Solving this problem will increase your chance to get selected in this company
Skill covered: Programming
How do you remove whitespace from the start of a string?
Choose another skill to practice
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