JPMorgan Interview Questions 2026
Published July 22, 2026 · Updated July 22, 2026
2 real interview questions asked at JPMorgan. Covers Data Engineering / PySpark, AWS / Auto Scaling. Reported by engineers who went through the JPMorgan process.
2 questions
149 engineers asked
190 upvotes
Data Engineering / PySpark (1)
What is the difference between narrow and wide transformations in Spark? Why does it matter for performance?
AWS / Auto Scaling (1)
Your application on EC2 experiences a spike to 10x normal traffic every Friday at 6 PM. How do you architect for this predictable load?
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Frequently asked questions
What is the difference between narrow and wide transformations in Spark? Why does it matter for performance?
What is the difference between narrow and wide transformations in Spark? Why does it matter for performance?
Your application on EC2 experiences a spike to 10x normal traffic every Friday at 6 PM. How do you architect for this predictable load?
Your application on EC2 experiences a spike to 10x normal traffic every Friday at 6 PM. How do you architect for this predictable load?