Antonin JanuskaStaff Engineer. Writer since 2012.Boulder, Colorado

I build with AI and write about what I learn

Antonin Januska in a black cap and glasses in front of a graffiti brick wall
Fig. 1 — The author, Boulder.

20+ years of software development, writing about AI workflows, technical leadership, and the craft of building things.

20+
Years building
600+
GitHub stars
2012
Blogging since
01.

Start here

All writing

Three pieces that explain most of what this site is about.

02.

AI & Machine Learning

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Workflows, tools, and experiments.

  1. 01

    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
    2026-08-14
  2. 02

    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
    2026-07-09
  3. 03

    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-codeskillsarchitecture
    2026-07-09
  4. 04

    An Honest Opinion on the State of Code Gen AI, Spring 2026 Edition

    A frank assessment of where code generation AI actually stands in 2026 -- from agentic harnesses to multi-agent architectures and what still needs to change.

    aiclaude-codeproductivity
    2026-03-25
  5. 05

    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.

    storyi-ai
    2026-02-27
  6. 06

    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
    2026-02-27
03.

Digital Garden

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Engineering, opinions, and deep dives.

04.

AI Experiments

Projects, tools, and creative AI work.

05.

Elsewhere

Work with me

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

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