Hi, my name is
Alex Leung
Software Engineer and Occasional Writer.
I build software, write notes, and make small tools for understanding systems and AI.
What you'll find here
I keep essays, notes, and small project writeups here: software engineering, system design, AI, product work, and learning.
I tend to write from the practical edge of those topics: what I tried, what held up, where the tools helped, and where the rough edges stayed visible.
Recent Photos
Lake Louise 
Twin Peaks 
Chengdu
Latest Writing
Camping Indoors in San Francisco
April 27, 2026
My first week in San Francisco has mostly been logistics, empty rooms, cats, and the slow work of making enough space to focus.
Inspectable Browser Tools Built with Coding Agents
April 10, 2026
Building frontend-only tools for load flow, Mandelbrot zooming, optimizer behavior, and event-loop ordering gave me inspectable ways to revisit technical models.
Dropout as Implicit Bagging in Deep Learning
March 7, 2026
A concrete way to understand dropout in deep learning: shared-parameter ensemble training that approximates bagging without training separate models.