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PubMatic Big Data Engineer Interview Questions, Process, and Tips

Updated 1 Aug 2024

PubMatic Big Data Engineer Interview Experiences

1 interview found

Interview experience
5
Excellent
Difficulty level
Moderate
Process Duration
2-4 weeks
Result
Selected Selected

I applied via Approached by Company and was interviewed in Jul 2024. There was 1 interview round.

Round 1 - Technical 

(5 Questions)

  • Q1. Pyspark optimizations and theoretical questions
  • Q2. Find the number of pairs which sum to target.
  • Ans. 

    Count pairs in an array that sum up to a target value.

    • Iterate through the array and store the frequency of each element in a hashmap.

    • For each element, check if the difference between the target and the element exists in the hashmap.

    • Increment the count of pairs if the difference is found in the hashmap.

  • Answered by AI
  • Q3. Binary search moderate problems of array ones increasing then decreasing
  • Ans. 

    Binary search can be used to solve moderate problems of arrays that are first increasing and then decreasing.

    • Use binary search to find the peak element in the array, which marks the transition from increasing to decreasing.

    • Divide the array into two parts based on the peak element and apply binary search on each part separately.

    • Handle edge cases such as when the array is strictly increasing or strictly decreasing.

    • Exampl

  • Answered by AI
  • Q4. System design for a web surfing utility
  • Ans. 

    Design a system for a web surfing utility

    • Use a web crawler to gather data from websites

    • Implement a search engine to retrieve relevant information

    • Utilize a recommendation system to suggest related content

    • Include user authentication and personalized settings

    • Ensure scalability and performance for handling large amounts of data

  • Answered by AI
  • Q5. Smallest subarray having given target sum
  • Ans. 

    Find the smallest subarray in an array that has a given target sum.

    • Use a sliding window approach to find the subarray with the target sum.

    • Keep track of the current sum of elements in the window and adjust the window size accordingly.

    • Start with a window of size 1 and expand it until the sum is greater than or equal to the target sum.

    • Shrink the window from the left side while updating the smallest subarray length until t

  • Answered by AI

Skills evaluated in this interview

Interview questions from similar companies

Interview experience
2
Poor
Difficulty level
Hard
Process Duration
Less than 2 weeks
Result
Not Selected

I was interviewed in Jan 2025.

Round 1 - Technical 

(3 Questions)

  • Q1. Tell me about yourself
  • Q2. Asked All SQL Syllabus
  • Q3. Asked All Power Bi concepts

Interview Preparation Tips

Interview preparation tips for other job seekers - Dont give interview took 2 hours and given 70% answers still not selected
Interview experience
4
Good
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Technical 

(4 Questions)

  • Q1. Components of Databricks
  • Q2. How to read a json file
  • Q3. Second highest salary SQL
  • Q4. How to configure the spark while creating the cluster
Interview experience
4
Good
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Coding Test 

Medium level of coding questions.

Round 2 - Technical 

(2 Questions)

  • Q1. About azure data factory
  • Q2. How to copy multiple csv into single file
  • Ans. 

    Use a command line tool like cat to concatenate multiple CSV files into a single file

    • Use the cat command in the terminal to concatenate multiple CSV files into a single file

    • Navigate to the directory where the CSV files are located

    • Run the command 'cat file1.csv file2.csv > combined.csv' to merge file1.csv and file2.csv into a new file named combined.csv

  • Answered by AI
Round 3 - Technical 

(2 Questions)

  • Q1. What is hdinsights in azure data factory
  • Ans. 

    HDInsight is a cloud-based service in Azure that makes it easy to process big data using Apache Hadoop, Spark, and other tools.

    • HDInsight is a fully managed cloud service that makes it easy to process big data using open-source frameworks like Apache Hadoop, Spark, and more.

    • It allows you to create, scale, and monitor Hadoop clusters in Azure.

    • HDInsight integrates with Azure Data Factory to provide data orchestration and ...

  • Answered by AI
  • Q2. How to perform data copy in azure
  • Ans. 

    Data copy in Azure can be performed using Azure Data Factory or Azure Storage Explorer.

    • Use Azure Data Factory to create data pipelines for copying data between various sources and destinations.

    • Use Azure Storage Explorer to manually copy data between Azure storage accounts.

    • Utilize Azure Blob Storage for storing the data to be copied.

  • Answered by AI
Round 4 - HR 

(2 Questions)

  • Q1. Expectations in the company
  • Q2. Ctc and relevant stuff

Skills evaluated in this interview

Interview experience
4
Good
Difficulty level
Moderate
Process Duration
-
Result
Not Selected

I was interviewed in Jul 2024.

Round 1 - Technical 

(2 Questions)

  • Q1. What is RAG ?
  • Ans. 

    RAG stands for Red, Amber, Green and is a color coding system used to indicate the status of a project or task.

    • RAG is commonly used in project management to quickly communicate the status of different tasks or projects.

    • Red typically indicates that a task or project is behind schedule or facing significant issues.

    • Amber signifies that there are some concerns or risks that need to be addressed.

    • Green means that a task or p...

  • Answered by AI
  • Q2. How you trainined LLM model?
  • Ans. 

    I trained the LLM model using a combination of labeled data, feature engineering, and iterative model tuning.

    • Collected and preprocessed labeled data for training

    • Performed feature engineering to extract relevant features

    • Used iterative model tuning to optimize performance

    • Evaluated model performance using metrics like accuracy, precision, and recall

  • Answered by AI

Skills evaluated in this interview

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

(1 Question)

  • Q1. Can you tell me about yourself?

Interview Preparation Tips

Interview preparation tips for other job seekers - The process was straightforward and hassle-free.
Interview experience
4
Good
Difficulty level
Easy
Process Duration
Less than 2 weeks
Result
Selected Selected

I applied via LinkedIn and was interviewed before Oct 2023. There were 3 interview rounds.

Round 1 - Aptitude Test 

Basic aptitude question

Round 2 - Technical 

(1 Question)

  • Q1. Basic analysis and ML questions , more focused on approach instead of coding
Round 3 - HR 

(1 Question)

  • Q1. As like other HR rounds
Interview experience
1
Bad
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Aptitude Test 

Online aptitude test have been coundected

Round 2 - Technical 

(1 Question)

  • Q1. About the data procesig and projects on data science
Interview experience
1
Bad
Difficulty level
Easy
Process Duration
Less than 2 weeks
Result
Not Selected

I applied via Approached by Company and was interviewed in Oct 2023. There were 2 interview rounds.

Round 1 - Resume Shortlist 
Pro Tip by AmbitionBox:
Keep your resume crisp and to the point. A recruiter looks at your resume for an average of 6 seconds, make sure to leave the best impression.
View all tips
Round 2 - HR 

(1 Question)

  • Q1. Fresher or experienced

Interview Preparation Tips

Interview preparation tips for other job seekers - Clear your Basic concepts about any programming language

I applied via Referral and was interviewed in Jun 2022. There were 3 interview rounds.

Round 1 - Resume Shortlist 
Pro Tip by AmbitionBox:
Don’t add your photo or details such as gender, age, and address in your resume. These details do not add any value.
View all tips
Round 2 - Group Discussion 

In this test they asked about basic internet knowledge like what is domain and co domain. And how to get the details of a company and cross check them. And basic ms office knowledge to work on given files.

Round 3 - HR 

(3 Questions)

  • Q1. Why do you wanna work here.
  • Ans. To achieve my goals while helping the company to grow.
  • Answered Anonymously
  • Q2. What you see yourself after 2 years.
  • Ans. To be at higher position in this company.
  • Answered Anonymously
  • Q3. Why do you want to work in this field.
  • Ans. Because it's an great opportunity to earn while learning and growing.
  • Answered Anonymously

Interview Preparation Tips

Topics to prepare for Damco Solutions Data Analyst interview:
  • MS Office
  • Basic internet knowledge
  • Adobe Acrobat
  • PDF
Interview preparation tips for other job seekers - For job seekers it will be great if they can communicate properly and have basic knowledge of internet and ms office. So they can break the interview without any kind of problem.

PubMatic Interview FAQs

How many rounds are there in PubMatic Big Data Engineer interview?
PubMatic interview process usually has 1 rounds. The most common rounds in the PubMatic interview process are Technical.
What are the top questions asked in PubMatic Big Data Engineer interview?

Some of the top questions asked at the PubMatic Big Data Engineer interview -

  1. find the number of pairs which sum to targ...read more
  2. Binary search moderate problems of array ones increasing then decreas...read more
  3. smallest subarray having given target ...read more

Tell us how to improve this page.

PubMatic Big Data Engineer Interview Process

based on 1 interview

Interview experience

5
  
Excellent
View more

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PubMatic Big Data Engineer Salary
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₹4 L/yr - ₹5.2 L/yr
59% less than the average Big Data Engineer Salary in India
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