Brian Liou
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Backend and distributed systems engineer. Cornell CS, Amazon, DoorDash.

Latest Project

Building a Model Serving API From Scratch

Building a Model Serving API From Scratch

I built a model serving API from scratch. Not because the world needs another inference server, but because I wanted to understand what happens between “send prompt” and “receive tokens.” The things ML system design interviews ask about: batching, backpressure,...

February 22, 2026 View project →

Latest Writing

System Design: Concepts, Patterns, Technologies

A scannable reference for system design interviews. Core concepts, common patterns, and key technologies with the tradeoffs that actually matter.

February 20, 2026 Read post →