Interview questions
Preparing for a data engineering interview at Pubmatic? This page contains 5 real interview questions sourced from verified Pubmatic interview experiences. Questions are sorted by frequency — the ones asked most often appear first.
Pubmatic data engineering interviews typically focus on General/Other, Behavioral, and Spark/Big Data. The interview bar skews toward harder problems (2 hard vs. 1 easy), suggesting emphasis on depth and system-level thinking.
Use the difficulty filters above to focus your preparation. For each question, attempt your own answer first, then compare with our expert solution. You can also practice these questions in our AI Mock Interview Coach for real-time feedback.
Tell me about yourself and your experience.
Implement a Spark job to find the top 10 most frequent words in a large text file.
Combine records by name with concatenated course values
Reverse operation for splitting values back to original format
Find average salary for each manager – Assume a table with manager_id and employee_salary
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