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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.
How do goroutines and channels work? How do you avoid a goroutine leak?
Go
Explain RAII and smart pointers. When would you use unique_ptr versus shared_ptr?
C++
Write a query for the second-highest salary in each department.
SQL
Explain the difference between INNER, LEFT and FULL joins with an example.
SQL
How would you find and fix a slow query in Postgres (EXPLAIN ANALYZE)?
PostgreSQL
Design a simple, highly available web app on AWS. Which services and why?
AWS
What's the difference between an IAM role and an IAM user?
AWS
How would you deploy and scale a web API on Azure?
Azure
Compare Cloud Run, GKE and App Engine for a new service.
Google Cloud
What's the difference between an image and a container? How do you keep images small?
Docker
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