A1 · Antonin Januska · Staff Engineer

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.

Read the writing Work with me Browse UI patterns →

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

Picture 1

20+

Years building

600+

GitHub stars

2012

Blogging since

Boulder, CO

Location

Start here

Three pieces worth reading firstAll writing →

AI · 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, and I think that whole category of software is about to get eaten.

Jul 9, 2026

AI · 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.

Jul 9, 2026

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

AI & Machine Learning

Workflows, tools, and experimentsView all →

Six most recent AI posts. Column headers sort the table.
#			Tags
1	2026-08-14	I Built an AI-Friendly UI Pattern Library	ai claude-code css
2	2026-07-09	The Future is Bespoke, Personalized Software	ai claude-code local-first
3	2026-07-09	The Local-First App Skill	ai claude-code skills
4	2026-03-25	An Honest Opinion on the State of Code Gen AI, Spring 2026 Edition	ai claude-code productivity
5	2026-02-27	I, AI: The Weight of Equal Parts (Part 3)	story
6	2026-02-27	The Claude Code Drawbacks	ai claude-code productivity

Chart 1 · Articles by year

Count of published articles and stories on this site, by published_at. 2026 holds 20 of them.

Digital Garden

Engineering, opinions, and deep divesView all →

Four most recent Digital Garden posts.
#
1	2026-02-23	17 Side Projects I Built With Claude Code in Two MonthsA look at 17 side projects I built in about two months with Claude Code -- from TUI apps in Rust and Go to browser games and AI agent tooling.
2	2026-01-08	Common React Hooks Antipatterns and GotchasLearn about common React Hooks antipatterns and how to avoid them for better code quality.
3	2026-01-08	The Simplest CSS GridsLearn the most common CSS Grid layouts with copy-pastable examples for two-column layouts, sidebar navigation, and more.
4	2024-03-13	Constants vs Enums in TypeScriptTypeScript tips and tricks