Software Engineer III at J.P. Morgan

How it went

What they would tell you

How to prepare

Their background

Round by round

1. 1

   Design Round60 min

   Problem: Design an API Usage Analytics Aggregator Requirements included:

   • Tracking API calls per user/service in real time
   • Configurable aggregation windows (1 min, 5 min, 1 hour)
   • Ability to dynamically update aggregation rules
   • Handling high-throughput ingestion and scalable storage
2. 2

   Managerial Round60 min

   This round was very conversational and focused on my past projects, team interactions, and work approach. Key topics:

   • How I handle conflicts and disagreements
   • My day-to-day responsibilities and cross-team coordination
   • How I learn new technologies and upskill The interviewer was very friendly and probed into culture fit, communication, and leadership potential.
3. 3

   DSA Round60 min

   Java Debugging

   • Task: Fix a Java code snippet containing compilation errors and logical bugs.

   • I had to debug live, explain the corrections, and justify my changes. DSA Problem

   • Platform: HackerRank

   • Problem: Similar to Reaching Points

   • I first coded the solution in Java and then rewrote it in C++ as requested.

   • Follow-ups included edge case handling and complexity analysis

   • Reaching Points

What came up