A local-first money & wallet manager built with Flutter — fully offline on Android, iOS, and web, architected for future cloud sync.
Software Engineer · Technical Trainer
Tuan Tran
By day I build.
By night I teach.
A software engineer working in Java, Spring Boot, and React — and a technical trainer at heart. Based in Ho Chi Minh City.
About
Engineer’s habits, teacher’s patience.
I’m a software engineer in Ho Chi Minh City — about five years building backend systems in Java and Spring Boot, and these days consulting full-stack with TypeScript and React.
I also love teaching: I’ve trained developers in Java and Spring Boot, and I hold a professional teaching certificate (NVSP) for college and vocational teaching. Shipping a feature or unpacking a tricky idea, I try to keep it simple, practical, and kind.
“Keep learning. Keep building. Keep sharing.”
Selected work
Things I’ve built
Writing
Recent posts
Setting Up API Key Authentication for Claude Code in VS Code
How to run Claude Code in VS Code with your own Anthropic API key on macOS — export it in .zshrc and launch from the terminal so the editor inherits it.
Picking up React after five years of Spring Boot
What transferred from backend, what didn’t, and why TypeScript felt strangely familiar.