Selected work

About Projects

A selection of production systems and websites for utilities, clinics, consultancies, and nonprofits.

AquaRed — Water meter reading app

Offline-first React Native app used daily in production by 15 field readers to record water meter readings with photo evidence, with two-phase sync to Azure Blob Storage.

  • React Native
  • Expo
  • SQLite
  • Azure

TERAFIS — Clinic management system

Production management system for a physiotherapy clinic covering patient records and payments, with column-level encryption, hash-chained audit logs, and idempotent payments.

  • Next.js
  • Supabase
  • PostgreSQL
  • Vitest

TGC — Multi-tenant survey platform

Multi-tenant survey platform for 3 organizations with PostgreSQL Row-Level Security, role-based access, automated distribution via Edge Functions, and real-time assignment tracking.

  • React
  • Astro SSR
  • TypeScript
  • Supabase
  • PostgreSQL

SC Medical Clinic — Trilingual website

Vietnamese/English/Korean clinic website with Google Maps and Zalo integration, deployed on Cloudflare Pages with automatic GitHub deploys.

  • React
  • Vite
  • TypeScript
  • Tailwind CSS
  • react-i18next
Website Tesoros de Dios

Tesoros de Dios Website

Website and digital presence for a nonprofit supporting children with disabilities in Nicaragua, including mission, programs, and ways to get involved.

  • WordPress
  • PHP
  • MySQL
  • CSS
  • JavaScript
Library Tesoros de Dios

Tesoros de Dios Library (Biblioteca)

Virtual library platform (PHP, MySQL, MVC) serving partner churches with an admin panel for users and content, deployed on Bluehost.

  • PHP
  • MySQL
  • MVC
  • CSS
  • JavaScript

WordPress vulnerability scanner

Web application that audits WordPress sites for outdated libraries and vulnerable APIs and emails remediation recommendations to site owners.

  • Astro
  • React 19
  • TypeScript
  • Node.js
  • Supabase
  • Resend