01
Realtime product
App Chat
A realtime chat experience built across the full MERN stack, with Socket.IO handling live conversations.
Back-end developer · East Java
I build the systems
behind the screen.
I’m Alfin—focused on dependable APIs, realtime experiences, and web products that stay simple for the people using them.
- Node.js
- Express
- React
- TypeScript
- SQL
01Code with intent.
Open to collaboration
Remote · Indonesia
01 / Selected work
Things I’ve made
work in the real world.
A selection of experiments and products across realtime communication, APIs, and full-stack development.
View repository ↗
02
Full-stack API
Clouds API
A web API project bringing Express, React, Bootstrap, and Sequelize into one practical stack.
03
Automation API
WhatsApp API
A Node.js API experiment for messaging automation, built with whatsapp-web.js.
02 / About
Curious by default.
Practical by choice.
I enjoy turning messy requirements into clear systems—mapping the data, shaping the API, and making sure every moving part has a reason to be there.
My work moves between back-end engineering and the interface it supports. That wider view helps me build products that feel coherent from database to browser.
01
Clarity over clevernessReadable code and understandable decisions age better.
02
Build for the edge casesReliable products respect the moments that don’t go to plan.
03
Keep learning in publicEvery repository is a record of curiosity becoming capability.
03 / Contact
Have a challenge
worth solving?
Tell me what you’re building, what’s getting in the way, and where you want it to go.
Find me on GitHub