I build web apps that people actually use, and lately most of them have AI wired into them somewhere it earns its place. I work out of Eastern Visayas in the Philippines and take clients wherever they are, which usually means my day overlaps four time zones and a lot of coffee.
I got into this the honest way. As a kid I pulled apart websites to see how they worked, then started putting my own ideas together. The curiosity never left. It just turned into a job.
What I build
Right now I run a freelance practice building AI-integrated web apps, mostly on Next.js and the Claude API, with n8n for the automation glue. A few of the things I’ve shipped:
- AlgoLens is an AI pre-post reviewer for X. You paste a draft, it scores the hook, clarity, and shareability, and it can rewrite the post in a few styles. It runs as a web app and a Chrome extension, and it’s live and free in open beta at algolens.app.
- CERPSYS is a production ERP I built and maintained for one of Leyte’s largest rental enterprises. Three branches that used to run on spreadsheets and WhatsApp now run fleet, inventory, billing, and cross-branch reporting through one system, every day.
- FloatWatch is a Flutter app for rural GCash operators who track cash and e-float in a paper notebook. I shaped it around the workflow they already trusted, made it offline-tolerant because rural connectivity is what it is, and field-tested it with actual operators.
- StockPilot is an AI inventory and POS for small retailers, with a Gemini summary layer that tells an owner what actually changed today. Four modules shipped so far, still building.
How I got here
The ERP work was at Litecloud PH, from 2022 to 2024, where I went from writing the first module of CERPSYS to keeping a live multi-branch system running for real operators. That job taught me the part of software that doesn’t show up in a tutorial: what happens after you ship, when people depend on the thing every day. I went freelance in 2024 and have been building for international clients since.
How I work
I care about code that earns its place: readable, honest, and actually shipped. I reach for AI where it adds real value and leave it out where it would just add noise. The belief I keep coming back to is that the best products come from solid engineering, genuine AI integration, and an obsession with actually finishing.
Day to day that’s TypeScript, React, Next.js, Flutter, Tailwind, Node, Postgres, and Vercel, with Claude Code and n8n in the loop. I also write about the work, mostly notes from the field about what survives production and what doesn’t.
Get in touch
If you’re building something and want a developer who’ll ship it and then stick around to keep it running, that’s the part I like most. You can find my code on GitHub, connect on LinkedIn, or reach me directly at jamescarlsitsit@gmail.com.