Hi, my name is
Alex Leung
Software Engineer and Writer.
I build software, write notes, and make browser tools for understanding systems and AI.
Writing, Notes, and Tools
I keep essays, technical notes, and project writeups here: software systems, AI product development, deep learning, and browser tools.
Most pieces start from a concrete thing I tried: an implementation detail, a reading note, a tool behavior, or a product or system trade-off.
Recent Photos
Lake Louise 
Twin Peaks 
Chengdu
Latest Writing
Farming Expensive Coding Agent Sessions
June 14, 2026
My coding-agent sessions are more expensive now. The useful spend is the part that turns mistakes into better tests, graders, prompts, and checks.
Camping Indoors in San Francisco
April 27, 2026
My first week in San Francisco: paperwork, an unfurnished apartment, two cats, Bay Trail runs, and waiting for furniture.
Coding Agents for Inspectable Browser Tools
April 10, 2026
Building frontend-only tools for load flow, Mandelbrot zooming, optimizer behavior, and event-loop ordering gave me concrete ways to inspect older technical models.