Full-stack engineer in Ho Chi Minh City, available for freelance projects.
| If you need | What I've done | Where to check |
|---|---|---|
| A school or learning platform built or extended: courses, online exams, timetables, student records | Four years building and maintaining platforms used by schools in Vietnam. Go backend, React frontend. | Company-owned and private; I can walk you through it on a call |
| A slow system made fast | Found and fixed slow MySQL queries on production systems with heavy daily use | slow-query-proof: a slow query and three fixes, each measured against every query the app sends |
| A bug report closed with proof, not a "fixed" message | A repro written from the ticket that fails on the broken build and passes on the fix | ticket-to-proof: three defects, one command to check all of them |
| AI coding agents that deliver tested work, not just plausible code | Test suites the agent runs against a staging server, with every result tied to a screenshot or a database query | qa-system, an open-source Claude Code plugin (early version) |
| Generated pages checked before they go live | A pre-publish check that reads every page against the site's own config: phone numbers, forms, placeholders, sitemap | site-qa-check: a broken demo site and its fixed twin |
My day-to-day code lives in private company repositories, so the contribution graph here stays quiet. How I work with coding agents: The Agent Lab.
Email: ledanhtrongdev@gmail.com