RAIHAN

I'm an IT student at Universitas Gadjah Mada in Yogyakarta. I build geospatial AI, web apps and developer tools.

--:-- in Yogyakarta

Finding the sun

The real sky over Yogyakarta. Drag it to change the time.

Work

Five projects, each with something to try. Open one for the full story.

PetaSurya

Solar potential for every rooftop in a city.

Open source View details

Shadows follow the sun above

Point at a roof to scan it.

PRAKIRA

Early warnings for disease outbreaks, read from the weather.

Live View details

Low 9
Watch 4
Alert 3

Move the cloud to make it rain. Risk follows later.

PanenCerdas

Harvest forecasts from satellites, made before the harvest.

Live View details

Day 0

Planting

Move across the fields to run the season.

Figlo

Figma designs become working Roblox UI.

Alpha View details

Figma

Shop_frame
Title_sheen
Coin_float
Buy_button_smooth
Close_button

Roblox Studio

SHOP

Toggle tags on the layer, then try the button.

agent-council

Four AI roles argue. One ruling you can test.

Open source View details

Should I build agent-council?

The council

Tap a seat to hear one role, or convene all four.

About

I'm Raihan, an Information Technology student at Universitas Gadjah Mada in Yogyakarta, Indonesia.

I like problems that start as messy real-world data, like satellite pixels, weather records and case counts, and end as something a person can act on.

Surya means sun. That's why this page has a sky.

Languages: TypeScript, Python, JavaScript, C++, Luau
Web: Next.js, React, Node.js, Express, FastAPI, Tailwind CSS
Data and ML: PostgreSQL, Supabase, pandas, NumPy, scikit-learn, XGBoost, ONNX
Maps: MapLibre GL, Leaflet, OpenStreetMap, MODIS
Tools: Git, Docker, Bun, Figma, Roblox Studio

Open to work

Got something to build?

Freelance work, a collaboration or an internship. Tell me about it and I'll write back.

Email: Message me on LinkedIn
Based in: Yogyakarta, Indonesia; It's --:-- there.