About.
I’m Tuan — a Vietnamese developer working in a Japanese workplace, where colleagues call me 英俊 (Eishun).
I love small software that runs for real, every day: a counter POS app, a booking site that never sleeps, a tool that takes the grind out of video editing. I take it from the first conversation to daily use — design, code, tests, docs and setup support.
See my work →What I do
- 01
Shop & POS apps
Touchscreen desktop apps for shops: ordering, invoicing, multilingual menus, packaged as an installer.
- 02
Websites & online booking
Multilingual sites with menus and booking, running on the cloud at a low running cost.
- 03
Automation
Tools that cut repetitive work: video editing, data processing, syncing between systems.
How I work
- 1
Listen
Understand how the shop really works before talking technology.
- 2
Design
Sketch screens and data flow, and agree on them before writing code.
- 3
Build with tests
Every feature ships with automated tests and a security review.
- 4
Ship & support
Installers, setup guides, documentation — and ongoing improvements after launch.
Skills
- Languages
- KotlinTypeScriptPythonSQL
- Frontend
- ReactAstroTailwind CSSCompose Desktop
- Backend & cloud
- Cloudflare WorkersD1FastAPI
- Media & AI
- FFmpegWhisperElevenLabs
- Quality
- VitestpytestGit