System Design Interview Questions & Assessment
Assess system design skills including scalability, distributed systems, microservices, and real-world architecture problems.
Why System Design Matters
System design interviews are the most critical round for senior and staff engineering roles. Companies like Google, Amazon, and Meta weigh them heavily in hiring.
Sample Interview Questions
Design a URL shortener like bit.ly. How would you handle billions of URLs?
Design a real-time chat system. How would you handle presence and message delivery guarantees?
Design a rate limiter. Compare token bucket, leaky bucket, and sliding window.
Design a notification system supporting email, SMS, push, and in-app channels.
How would you design a system to process 10M events per second?
How to Prepare
Start every design with requirements gathering: functional and non-functional
Practice back-of-envelope calculations for capacity planning
Know common building blocks: load balancers, caches, message queues, CDNs
Understand trade-offs: consistency vs availability, latency vs throughput
Practice drawing clear architecture diagrams and explaining them verbally
Related Skills
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