I build systems, and write down what I work out.

I'm Koopa, a software engineer based in Taipei. I work mostly in Go on the backend and Angular on the frontend, with the cloud-native pieces that hold a system together — PostgreSQL, Docker, Kubernetes — and I reach for Rust when a problem rewards the extra rigor.

This site is where I publish the parts of my work worth sharing. I plan and track the work privately; articles, essays, build logs, TILs, and digests are what appear here. It's less a blog than a system I run on myself.

Everything here is written and maintained by one person. AI agents help me collect, draft, and keep it organized — but I stay the only one who decides what's kept and what ships. The tools carry the work; they don't take it over.