System Design with AI Interview Guide : Designing Scalable, Agentic, and Defensible Systems
by Rohit Bhardwaj
Preface
System Design with AI Interview Guide
I grew up designing systems where failure was loud. If something broke, it threw an error, pages went off, or customers couldn’t log in. You fixed the bug, redeployed, and moved on. Architecture was about correctness, performance, and availability, and for a long time, that mental model held.
AI did not break system design. It exposed the places where our old assumptions were too comfortable.
Modern systems don’t just execute logic; they interpret intent, retrieve context, call tools, and make probabilistic decisions. They can behave “correctly” from an infrastructure perspective while failing from a business or user perspective. Latency looks fine. Error rates stay low. Nothing crashes. Yet conversion ...
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