I build software, write books about it, and explain it on camera.

I started writing code to see what would happen. More than a decade on I still do, only now the things I build are used by millions of people, and some of them write back.

The teaching crept up on me. A friend asked how programming worked, I explained it in writing, then via video. The video became a channel, the channel became four books and several sites full of guides, tutorials and lessons. Hundreds of thousands of people have learned something from one of those.

Some of the work I am proudest of started with a problem close to home and grew into a product for everyone. An Igbo learning app with real native voices, built so my daughter could greet her grandmother properly. A period tracker that keeps its data on the phone, because health data should not be a business model. An app that runs language models entirely on your device, because private AI should be normal. I think good software should feel like it was made by someone who cared, and I try to be that person.

These days most of my thinking is about how people and AI actually work together in the ordinary hours of real work, away from the demos. That is what the newest book is about.