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Updated weekly · Last refresh Aug 30

Pubmatic QA Engineer Interview Questions

The questions to prepare for a Pubmatic QA Engineer interview. Questions from real interview reports rank first. Updated weekly.

34questions
~5htotal time
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1
CodingStart here. 6 questions · ~55 min
Palindrome and String ReversalEasy
Practice

Determine whether a string is a palindrome and return its reversed form using two-pointer string processing.

string manipulationPubmatic
Big Data, Spark, and MultithreadingHard

Evaluates ability to reason about complex data and concurrency topics in technical work.

sparkPubmatic
Java Polymorphism and InterfacesMedium

Assesses Java OOP understanding relevant to writing maintainable tests and code.

javaPubmatic
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2
SQL & Data Manipulation7 questions + 1 drill · ~74 min
Second Highest Without AggregatesHard
Practice

Find the second highest salary in each department without using aggregate functions.

SubqueriesRankingSelf-JoinsPubmatic
PubMatic Reseller vs Direct CountsEasy
Practice

Count exact PubMatic direct and reseller entries for a page using a LEFT JOIN and conditional aggregation.

Pubmatic
SQL Join Types and QueriesMedium

Tests SQL join understanding and ability to write correct multi-join queries.

SubqueriesJoinsmany-to-onePubmatic
Second-Highest Booking ValueEasy
Practice
Practice drill

Find the second-highest distinct completed booking value using a join, filtering, and DENSE_RANK.

SubqueriesRankingtransactionsSojernSpringfield Courtyard - Atrium Hospitality
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3
Behavioral & Leadership19 questions · ~175 min
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4
More topics2 questions · ~18 min
Test Plan for Ad DeliveryMedium

Tests end-to-end test planning and case design for real-time ad delivery at Pubmatic.

test planningPubmatic
QA Test Framework and ChallengesMedium

Assesses execution skills and problem-solving when creating and maintaining test frameworks.

api testingsqlPubmatic
The finish line: interview-readyComplete all 34 questions plus 1 hands-on drill to finish this plan.