Antonin Januska · Boulder, Colorado

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.

  • 20+Years Building
  • 600+GitHub Stars
  • 2012Blogging Since
Antonin in a black cap and glasses in front of a graffiti brick wall
Staff Engineer AI workflows

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Three pieces that explain what I care about

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.

AI Workflows

The Local-First App Skill

A reusable blueprint that tells Claude Code how to build a single-user app -- Next.js, node:sqlite, a pure logic core -- so every app I build comes out the same shape.

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.

AI

AI & Machine Learning

Workflows, tools, and experiments

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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.

  • AI
  • Claude Code
  • CSS
AI

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.

  • ai
  • claude-code
  • local-first
AI

The Local-First App Skill

A reusable blueprint that tells Claude Code how to build a single-user app -- Next.js, node:sqlite, a pure logic core -- so every app I build comes out the same shape.

  • ai
  • skills
  • local-first
AI

The Claude Code Drawbacks

A critical look at the hidden pitfalls of AI-assisted development -- from skipped tests and weakened assertions to scope creep and context rot -- based on real-world experience with Claude Code.

  • AI
  • Claude Code
  • productivity
AI

Digital Garden

Engineering, opinions, and deep dives

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The Simplest CSS Grids

Learn the most common CSS Grid layouts with copy-pastable examples for two-column layouts, sidebar navigation, and more.

Digital Garden

AI Experiments

Projects, tools, and creative AI work

Service

AI Workflow Consulting

Helping companies implement AI tools and processes effectively

Claude · LLMs · Prompt Engineering

Article

AI Glossary

Comprehensive glossary of AI terms and concepts

Work With Me

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

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