Design a Scalable Notification System

Company: J.P. Morgan

Role: Software Engineer

Category: System Design

Difficulty: medium

Interview Round: Onsite

Quick Answer: This question evaluates a candidate's ability to design a large-scale, asynchronous notification platform that fans messages out across push, email, and SMS channels. It tests system design skills around scalability, reliability, message queue architecture (Kafka, RabbitMQ), and multi-layer rate limiting, commonly probed to assess practical distributed-systems reasoning at a conceptual and architectural level.