J.P. Morgan Software Engineer Interview Experience — Phone Screen, Then a Code Review Round and a System Design Onsite

J.P. Morgan·Software Engineer·Jun 2026
OnsiteTechnical Screenmedium

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Practice the questions from this interview

First Non-Repeating Character in a String
Two Sum — Indices Summing to a Target
Java Core Deep Dive: Concurrent Collections and Java 8 Features
Exception Handling in a RESTful Service with @ControllerAdvice
Design a Scalable Notification System
Architecture and Data-Scaling Trade-offs

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