Useful systems, small tools, and notes.

I'm Stirling Yiin. I build products, internal systems, and small internet tools — usually around data, AI, finance, property, or developer productivity.

By day, I'm the Head of Urby and VP of Engineering at UrbanMetry, a Malaysian PropTech company. We're a WEF Technology Pioneer, raised $2 million from Monk's Hill Ventures, and have been accepted into the Securities Commission Malaysia Regulatory Sandbox.

This site is the workshop: calculators, simulations, prototypes, and occasional notes on building with more speed and smoothness.