Antonin Januska

Antonin Januska · Staff Engineer · AntJanus

I build with AI and write about what I learn.

20+ years of software development, writing about AI workflows, technical leadership, and the craft of building things.

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Antonin in a black cap and glasses in front of a graffiti brick wall

About

Hi, I'm Antonin.

Staff Engineer building AI-backed systems, engineering standards, and the workflows that let teams ship serious software.

20+

Years building

600+

GitHub stars

2012

Blogging since

Based in

Boulder, Colorado

Start here · AI Workflows · Jul 9, 2026

The Future is Bespoke, Personalized Software

Every app I use is about 70% right. The last 30% never ships because the addressable market for it is one person -- me. So I built seven apps that are 100% right for one person, and I think that whole category of software is about to get eaten.

Latest · 6 posts

AI & Machine Learning

Workflows, tools, and experiments

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Start here · AI Development

The Local-First App Skill

A reusable blueprint that tells Claude Code how to build a single-user app.

Jul 9, 2026

Start here · AI Development

I Built an AI-Friendly UI Pattern Library

A UI pattern library where every pattern ships the prompt that rebuilds it, so a coding agent can put it in your codebase instead of you copying CSS.

Aug 14, 2026

Digital Garden

Engineering, opinions, and deep dives

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Reference

AI Glossary

Comprehensive glossary of AI terms and concepts

Projects

Things people actually use

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Work with me

I help companies implement AI workflows and accelerate their development teams.

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