Full-stack development
End-to-end web applications with modern frameworks, from the form to the database.
Jahz.
Software & web developer
I build web apps, internal tools, and mobile apps from the interface to the database, shipping from Manila for teams that need things to work.
Software & web developerManila, PhilippinesOpen for projects
Built for production.
Not for demos.
I'm a software and web developer based in Manila. I design and ship full-stack products: the screens people click, and the systems underneath.
Kastr: worship slides, run live from anywhere.
Real production software for worship teams and live operators, not a concept deck.
Live in productionkastr.site
Run the room from a browser tab.
Online setlists, lyrics, and live media projection designed for front-of-house operators, worship teams, and live performers. Gives operators instant slide slicing, multi-display output, and mobile remote clickers without heavy desktop installers.
- Architecture
- Zero-install Web
- Sync
- Real-time cues
- Control
- Mobile clicker
- Setlists with run dates and automated Today/Tomorrow schedule cues
- Smart lyrics engine that automatically slices slides on blank lines and headers
- Deck and phone clicker mode to cue slides from anywhere in the venue
- Custom song styling, video backgrounds, and low-latency presentation output
kastr.site/app
Real capture · Kastr run deck
Also shipping: Jed
One clone, one client, ready to ship.
Client Site StarterLive demo
One clone, one client, ready to ship.
A production-ready base for branded client websites, built on TanStack Start and Supabase. Each client gets a fresh clone with sign-in, an admin panel, a blog, a contact inbox, and an API and MCP server already working. It was first used to rebuild a church website.
Setup
One clone per client
Access
REST API + MCP
Admin
Blog, pages, inbox
- Pages and blog drafts in a block editor, with media, redirects and RSS
- Roles enforced by row-level security, with optional or required two-step login
- One personal access token works for both the REST API and MCP
- Every API call runs as the token owner and lands in the audit log
TanStack StartReact 19TypeScriptTailwind CSSSupabaseMCP
jed-starter.vercel.app
Real captures
What I do
End-to-end product work, from the first screen to the database and the deploy.
Internal tools
Dashboards and admin panels that cut the back-and-forth out of operations.
Mobile development
iOS and Android apps with React Native, for when the product needs to live in a pocket.
Performance
Debugging, optimization, and keeping production apps honest when they get slow.
Websites and CMS
WordPress and Drupal builds, migrations, and the glue that keeps content teams shipping.
Hosting and traffic
Caching, filtering, and shaping traffic so sites stay fast and hosting bills stay small.
Tools I reach for
- React
- React Native
- TanStack
- TypeScript
- Next.js
- Tailwind
- WordPress
- Drupal
- PostgreSQL
- Node.js
- Vercel
- Prisma
- Supabase
- Convex
- GitHub
- Docker
- AWS
- GraphQL
- Redis
Latest writing
Oct 18, 2026 · 3 min read
Enforcing roles in JED with Supabase row level security
Hiding a button isn't access control. In JED, roles live in Postgres and every table checks them, so the database says no even when the app forgets to.
Oct 18, 2026 · 4 min read
One token model for a REST API and an MCP server
JED ships a REST API and an MCP server for AI clients. I put both behind the same personal access tokens and the same handlers, so there's one set of rules to get right.
Oct 18, 2026 · 4 min read
Why JED is one fresh repository per client
I build a lot of client sites on the same base. I stopped trying to run them from one shared codebase and made JED a template you copy for each client instead.
Let's build something useful.
A question or a hello is enough. I read everything and reply as soon as I can.
- devjahz@gmail.com
- projects
- Open for projects
- location
- Manila, Philippines