Antonin Januska — Staff Engineer, writer, maker of small useful software

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 — Fig. 01 — Boulder, Colorado

20+Years building

600+GitHub stars

2012Blogging since

Selected work · 2012 — now

Things I’d show you first.

All 31 projects

A blueprint drawing of interface parts: dialled gauges, dimensioned panels, and a grid of repeated tiles

UI Pattern Library

40 patterns

Interface patterns lifted out of projects I actually shipped. Each renders live and ships the prompt that rebuilds it from scratch.

HTML
CSS
JavaScript

cc-dash

25 MCP tools

A dashboard and MCP server for a project portfolio whose entire state lives in markdown files.

TypeScript
Next.js
MCP

Skillbox

Open source

Personal and utility prompts packaged as SKILLs for Claude Code. Installable via npx.

Claude Code
SKILLs

Collage of side project notes labelled 17 projects

17 side projects in two months

Feb 2026

TUI apps in Rust and Go, browser games built with my kids, and AI agent tooling — all with Claude Code.

Rust
Go
Browser

Start here · three hand-picked reads

If you only read three.

AI Workflows · Jul 9, 2026

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 · Jul 9, 2026

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 · Aug 14, 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.

Journal · AI, Digital Garden

Latest writing

Workflows, tools, experiments — plus engineering opinions and deep dives.

Everything

Work with me

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

Get in touch

S/01
AI Workflow Audit
Review current workflow, identify bottlenecks, and leave with a prioritized plan your team can execute immediately.
Typical scope: 1-2 weeks
S/02
Implementation Sprint
Hands-on rollout of one repeatable workflow with guardrails, review criteria, and team enablement.
Typical scope: 2-6 weeks
S/03
Leadership Advisory
Support for engineering leadership creating an operating model for AI usage across multiple teams.
Typical scope: monthly advisory