AntJanusAntonin Januska

Antonin Januska · Staff Engineer · 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
Read the writing Work with me Browse UI patterns →
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Three articles, in the order I'd hand them to you

If you only read three things on this site, read these.

AI Workflows

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.

July 9, 2026
AI Development

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.

July 9, 2026
AI

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.

August 14, 2026

AI & Machine Learning

Workflows, tools, and experiments

All AI writing →

  • 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.

    AIClaude CodeCSSUI

  • 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.

    aiclaude-codelocal-firstside-projects

  • 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.

    aiclaude-codeskillsarchitecturelocal-first

  • I, AI: The Weight of Equal Parts (Part 3)

    When a lunar mining base's AI starts overassigning crews and its robots begin prioritizing each other over human safety, psychodeveloper Lili and AI manager Sophie are sent off-world to investigate.

    storyI, 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.

    AIClaude Codeproductivity

Digital Garden

Engineering, opinions, and deep dives

All writing →

AI Experiments

Projects, tools, and creative AI work

Service

AI Workflow Consulting

Helping companies implement AI tools and processes effectively.

ClaudeLLMsPrompt Engineering
Article

AI Glossary

Comprehensive glossary of AI terms and concepts.

Elsewhere

Find me on LinkedIn, GitHub and YouTube.

Work with me

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

Workflow audits, implementation sprints, and leadership advisory.

Get in touch →

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I build with AI and write about what I learn. Twenty years of software, written down so the next person has an easier time.

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