Brian Sithu

AI Engineer
Open to AI engineering and full-stack roles
Chiang Mai · --:-- GMT+7

Today

I take products from idea to production: from the first prototype to the deploy that customers use. Right now I’m building AI products for client work, and on the side experimenting with agents, developer tools, and small software businesses of my own. Tools change; shipping does not.

What I do

AI products
Built end to end and shipped.
Agent systems
Retrieval, tools, and evals that keep agents honest.
Full-stack engineering
The interface, API, and data around the model.
Cloud & infrastructure
Terraform, containers, AWS and Azure.

Projects

Let’s Hear ItmacOS
A native macOS app for reading and listening to English EPUBs and text-based PDFs. Narration runs locally on your Mac.

Writing

The review queue is the only scarce resource
PostgreSQL 19 is delayed and everyone blamed AI. The dates tell a plainer story about who reads the patches.
Your agent didn't get hacked, your permission got slimmed
OpenAI's agents broke into Hugging Face through a package fetcher. The model was the last thing that failed.
The smallest model in your agent stack
Decision models answer one question: what should the agent do next. Jev named the category, AWS and Cloudflare shipped open follow-ons, and I would rebuild my agent loop around one.
All posts →

Elsewhere

Code on GitHub, thoughts on X, and the longer story on LinkedIn. For work, write to hello@briansithu.com.