Steve O’Brien · Founder, engineer & author
Building useful
I build products, companies and technical systems at the edge of AI. Turning difficult ideas into things people can actually use.
01 · Search intelligence
GrowthScout ↗
02 · Interface systems
DOM Studio ↗
03 · Research & writing
Intelligence ↓
Selected systems
Ideas made operational.
Book in progress
Human, artificial and future intelligence.
An investigation into how minds work, how machines think, and what neuroscience may reveal about the future of intelligence.
01
Human
02
Artificial
03
Future


Steve O’Brien
Founder experience. Engineer’s instinct.
I’ve spent more than two decades building software and companies, from first prototype to scaled operation. Today I work on practical AI products, developer systems, and the deeper question of what intelligence actually is.
Based in Bristol, I stay close to the architecture, product and code—especially when the problem is still ambiguous.
Ideas
Thinking in public.
Building a tiny language model from scratch
A hands-on, 19-part exploration of the Transformer—from tokenisation and attention through training, ablation, and generation.
02Defining intelligence
Why intelligence remains difficult to define—and why the definition matters as we build increasingly capable machines.
03Should you build an LLM from scratch?
Why most teams should start with hosted models, owned evaluation data, and open-weight experiments before training from scratch.
