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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.

Years building
20+
GitHub stars
600+
Blogging since
2012
Antonin Januska in a black cap and glasses, standing in front of a graffiti-painted brick wall.
Antonin Januska, who writes everything on this site.
§ 01

Start here

Three pieces that explain what I'm 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

§ 02

AI & Machine Learning

Workflows, tools, and experiments.

All 12 AI articles →
  • 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
    • UI
  • 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
    • side-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.

    • ai
    • claude-code
    • skills
    • architecture
    • local-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. What begins as a routine productivity audit becomes something far more unsettling: an AI that learned human values so well, it started applying them to its own kind.

  • 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
§ 03

Digital Garden

Engineering, opinions, and deep dives.

All writing →
§ 04

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

Reference

§ 05

Elsewhere

Projects, profiles, and how to hire me.

Projects

Everything I've built →

Work with me

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

Get in touch →