Writing
My ideas and findings on payments, AI and technology, focused on what matters and what is worth building next.
When should an AI system say "I don't know"?
AI22 September 2026 · 3 min read
Reliability sometimes means knowing when not to answer.
What payment systems taught me about reliability
Payments10 August 2026 · 3 min read
Some lessons about designing systems where failures are unavoidable.
Why useful AI is not necessarily reliable AI
AI2 July 2026 · 2 min read
Training a model to be more helpful can also make it less careful about when that help is warranted.
Why local payment rails matter
Payments4 June 2026 · 2 min read
Cross-border products still have to clear locally. The rail is not an implementation detail.
What changes when you move from engineer to CTO
Startup18 March 2026 · 2 min read
The work shifts from making the system correct to making the organisation able to keep it correct.