About

Hi, I’m Bran.

I use mathematics, software, and AI to solve practical problems—and I am learning what it takes to build businesses of my own.

Bran Yang holding a handwritten page of equations

My career began with mathematical models: first using partial differential equations to simulate biological processes in sewage treatment, and later forecasting supply and demand for supermarkets and big online platforms(Alibaba).

For the past three years, I have worked on AI-powered marketing solutions for clients around the world. That work has helped businesses reduce campaign costs, reach more relevant audiences, react faster to changing trends, and generate more sales and conversions.

It also showed me the limits of solving one part of a much larger system. As a service provider, I could often see more business problems than I could fix. Now I am moving closer to the work of building and running businesses myself—and documenting what I learn as I go.

What you’ll find here

  • First-hand lessons from learning to run a business
  • Notes from building software with AI
  • Practical explanations of tools and workflows
  • Product decisions, tradeoffs, and experiments

Elsewhere

Follow me on X for shorter updates, or visitGitHub to see what I am working on.