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PubMatic
Practice questions for the skills this job lists, plus common questions for any interview. These are for practice: we don’t know the employer’s actual questions.
What is the difference between a list and a tuple, and when would you use each?
Python
How do generators work, and why would you use one over a list?
Python
How do equals() and hashCode() work together in a HashMap?
Java
Explain the difference between checked and unchecked exceptions.
Java
Explain RAII and smart pointers. When would you use unique_ptr versus shared_ptr?
C++
How do you detect and handle overfitting?
Machine learning
Explain precision and recall, and when you'd optimise for each.
Machine learning
What's the difference between a transformation and an action, and why does it matter?
Spark
How do partitions and consumer groups give Kafka its ordering and scaling guarantees?
Kafka
Walk me through a project you built: the design, a hard bug and what you'd change.
This kind of role
Reverse a linked list, then explain its time and space complexity.
This kind of role
How would you design a URL shortener?
This kind of role
What do you know about PubMatic's products and customers?
PubMatic
Tell me about yourself in two minutes, focused on this role.
About you
Why this company, and why this role?
About you
Tell me about a time you disagreed with a teammate. What happened?
About you
Describe a time you failed or missed a deadline, and what you changed afterwards.
About you