ANTJANUS

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Antonin Januska · Boulder, Colorado

Antonin Januska · Staff Engineer · since 2012

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
me-3-cropped.jpg — Boulder, Colorado

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3 hand-picked · 2022–2026

AI Workflows · 2026-07-09

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 Development · 2026-07-09

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 · 2026-08-14

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 & Machine Learning

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Workflows, tools, and experiments.

DateTitle
2026-08-14I 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.

2026-07-09The Future is Bespoke, Personalized Software
2026-07-09The Local-First App Skill
2026-03-25An Honest Opinion on the State of Code Gen AI, Spring 2026 Edition
2026-02-27I, AI: The Weight of Equal Parts (Part 3) Story
2026-02-27The Claude Code Drawbacks

Digital Garden

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Engineering, opinions, and deep dives.

  1. 2026-02-23

    17 Side Projects I Built With Claude Code in Two Months

    From TUI apps in Rust and Go to browser games and AI agent tooling.

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.

Connect

Projects

Programmer's Proverbs600+ stars
YouTube ChannelAI & Dev
Cottage UIReact Library

Work With Me

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

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