Hi, my name is
Alex Leung
Software engineer and 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.
Latest Writing
Relearning Through Small Interactive Tools
April 10, 2026
Using a coding agent to build small browser tools turned out to be a good way to revisit concepts I had not touched in a while.
Dropout as Implicit Bagging
March 7, 2026
Chapter 7 gave me a better model for dropout: a cheap approximation to averaging many thinned networks with shared parameters.
iPad Air M3 11-Inch: First Impressions
March 5, 2026
For one study-heavy workflow, a lightweight iPad Air setup covered more than I expected.