WebMobileAI integration
Live site ↗Full-stack engineer · Iligan City, PH
Thoughtful
software.
Built for real life.
Hi, I’m MJ Carnaje.
Full-stack & AI engineer
I turn complex problems into products people can actually use. Web, mobile, and practical AI — from the first idea to the everyday details.
A little of what I build
From the Philippines, for people everywhere.12 projects & counting
01 Selected work
Ideas, out in the world.
Different industries. Different challenges.
The same care for the people on the other side of the screen.
There’s more where that came from.
02 The person behind the work
A builder first.
Always curious.
Michael James CarnajeIligan City, Philippines
I’m MJ, a full-stack engineer who likes turning complicated things into something useful, clear, and a little more human.
Some projects start with a business problem. KitaTracker started with my sister’s food business and a notebook full of sales. That’s the kind of work I care about: software with a real person and a real need behind it.
Today, that work spans care platforms, small businesses, travel, education, and the AI systems that help them do more.
A closer look at my experience01 /
The whole product
From the database and API to the small interaction that makes an interface feel right. I connect the pieces and take responsibility for how they work together.
Architecture · Web · Mobile02 /
AI with a purpose
Care plans, trip itineraries, knowledge search, and everyday automation. I build AI around a useful task, with people in control of the result.
Agents · RAG · Automation03 /
Built to keep working
The work continues after launch: making sense of feedback, handling the edge cases, and improving the product as real people use it.
Reliability · Iteration · Ownership03 My toolkit
The right tool.
For the real problem.
Tools change. The goal stays the same:
a product that feels simple, even when what’s underneath isn’t.
Interfaces & experiences
Fast on the web. At home on mobile.
- TypeScript
- React
- Next.js
- React Native
- Expo
- Tailwind CSS
Systems & data
A dependable foundation underneath.
- Node.js
- NestJS
- Python
- Flask
- PostgreSQL
- MongoDB
- Redis
Intelligence & connection
Useful AI and people in the loop.
- OpenAI
- Claude
- Gemini
- Vercel AI SDK
- Qdrant
- Socket.IO
- LiveKit