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PubMatic Front end Developer Interview Questions and Answers

Updated 5 May 2021

PubMatic Front end Developer Interview Experiences

1 interview found

I was interviewed in Apr 2021.

Interview Questionnaire 

1 Question

  • Q1. Closure, hoisting,basic functionality

Interview Preparation Tips

Interview preparation tips for other job seekers - Focus on javascript

Interview questions from similar companies

Interview Questionnaire 

3 Questions

  • Q1. N a line where words are separated by spaces, , and capitalize first letter of the reversed word. Other letters of the word should be in small. Input : “how are you?” → Output: “Woh Era ?uoy”
  • Ans. 

    The program capitalizes the first letter of each reversed word in a sentence.

    • Split the sentence into an array of words using space as a delimiter.

    • Reverse each word in the array and capitalize the first letter.

    • Join the modified words back into a sentence.

  • Answered by AI
  • Q2. He second question reduced to finding maximum weight matching in a bipartite graph. Not many people would have done this (maybe none)
  • Q3. There are 2 sets of countries. One set will donate clothes (something of this sort) and anotherset will accept clothes. A country can be in only 1 of the sets. The amount of clothes donated is also given. ...

Interview Preparation Tips

Round: Test
Experience: There were about 20 MCQs (30 minutes) to be done after the coding section. MCQs were totally nonsense. Can be done in 10 mins.For coding section 60 mins.  It was hosted on Hackerrank.
Duration: 90 minutes
Total Questions: 2

Round: Technical Interview
Experience: After this, selected candidates were interviewed that consists of 4 rounds and discussion was mostly on your CV and data structure problems.

General Tips: Be honest with your interviewer. If you are not comfortable in 1 topic, tell your interviewer honestly. Do well in other areas. Look for hints from the interviewer if you get stuck. They want to see how you approach a problem.
Skills: Algortihm, Data structure
College Name: IIT DELHI
Interview experience
4
Good
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Selected Selected

I was interviewed before Feb 2024.

Round 1 - Aptitude Test 

English and reasoning

Interview experience
5
Excellent
Difficulty level
-
Process Duration
-
Result
-

I applied via Campus Placement

Round 1 - Aptitude Test 

Aptitude questions with 2-3 coding questions

Round 2 - Technical 

(2 Questions)

  • Q1. Input-wwwrrrrttttuu Output - w3r4t4u2
  • Q2. Interpreter vs compiler
  • Ans. 

    Interpreter executes code line by line, compiler translates code into machine code before execution.

    • Interpreter translates code into machine code line by line during runtime

    • Compiler translates code into machine code before execution

    • Interpreted languages include Python, JavaScript

    • Compiled languages include C, C++

  • Answered by AI

I applied via Campus Placement and was interviewed in Sep 2021. There was 1 interview round.

Interview Preparation Tips

Interview preparation tips for other job seekers - Be thorough with DSA and low level design. Also have a good idea about Computer science fundamentals .
Interview experience
4
Good
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Not Selected

I applied via Recruitment Consulltant and was interviewed before May 2023. There were 4 interview rounds.

Round 1 - Coding Test 

Coding was hard conducted on the platform called interview.io

Round 2 - Coding Test 

Consits of 2 q 1 is Dp, and the other is Graph

Round 3 - Aptitude Test 

Bit harder compared to other companies

Round 4 - Aptitude Test 

Reasoning like questions

Interview experience
5
Excellent
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Aptitude Test 

It was an easy online test

Round 2 - Coding Test 

Question relates to graph like minimum spanning tree,hashing questiond

Round 3 - HR 

(1 Question)

  • Q1. Projects related to questions
Interview experience
4
Good
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Not Selected

I applied via Campus Placement and was interviewed in Apr 2024. There were 2 interview rounds.

Round 1 - Coding Test 

On hacker rank , included subjects like DBMS , OS and coding questions on priority queue

Round 2 - Technical 

(2 Questions)

  • Q1. Questions on OOPS
  • Q2. One DSA question on HashMap
Interview experience
5
Excellent
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Technical 

(1 Question)

  • Q1. How do yo sharding in mongodb
  • Ans. 

    Sharding in MongoDB involves partitioning data across multiple servers to improve scalability and performance.

    • Sharding is achieved by dividing data into chunks based on a shard key

    • Each shard contains a subset of the data, distributed across multiple servers

    • MongoDB's sharding architecture includes config servers, query routers, and shard servers

    • Sharding can be implemented at the collection level in MongoDB

  • Answered by AI
Round 2 - One-on-one 

(1 Question)

  • Q1. Python questions
Round 3 - HR 

(1 Question)

  • Q1. Why you want to work here
  • Ans. 

    I am passionate about software development and believe in the company's mission and values.

    • I admire the company's innovative projects and technologies.

    • I resonate with the company's culture of collaboration and continuous learning.

    • I am excited about the opportunity to work with a talented team of developers.

    • I believe my skills and experience align well with the company's needs.

  • Answered by AI
Interview experience
1
Bad
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Selected Selected

I applied via Referral and was interviewed before Mar 2023. There were 2 interview rounds.

Round 1 - Aptitude Test 

Aptiude test on their platform

Round 2 - Coding Test 

Coding question on array

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