AntJanusStaff Engineer · Boulder, CO
40°00′54″N 105°16′14″WDatum: antjanus.com · Contour interval 100 ftSheet 1 of 8 · Overview
105°17′W40°01′N

Sheet 1 Overview · Boulder, Colorado · elev. 5,430 ft

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 Januska in a black cap and glasses in front of a graffiti brick wall
Inset A · the surveyorAntonin Januska

Sheet index · 7 regions

The site, surveyed

Each summit is a section. Height follows how much has been written there. Pick a region to travel to it.

  1. 1AI · 12 guides · C3
  2. 2I, AI · 3 stories · B2
  3. 3Digital Garden · 11 articles · F3
  4. 4Demystifying Tools · 7 guides · G5
  5. 5Projects · 30 builds · E5
  6. 6UI Patterns · 40 patterns · B5
  7. 7About · Base camp · H2
105°13′W39°59′N

Suggested route · 3 waypoints

Start here

Three pieces that explain what I build and how I think about it. Walk them in order.

  1. Pl. 01

    AI Workflows2026-07-09AI · C3

    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.

  2. Pl. 02

    AI Development2026-07-09AI · C3

    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.

  3. Pl. 03

    AI2026-08-14AI · C3

    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.

Region 1 · Grid C3 · highest summit

AI & Machine Learning

Workflows, tools, and experiments.

View all
Pl. 04

Guide2026-08-14

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.

Pl. 05

Guide2026-07-09

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.

Pl. 06

Guide2026-07-09

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.

Pl. 08

Guide2026-02-27

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.

Region 3 · Grid F3

Digital Garden

Engineering, opinions, and deep dives.

View all
2026-01-08

The Simplest CSS Grids

Learn the most common CSS Grid layouts with copy-pastable examples for two-column layouts, sidebar navigation, and more.

F3 · article

Points of interest · Grid E5

AI Experiments

Projects, tools, and creative AI work.

All projects

Service

AI Workflow Consulting

Helping companies implement AI tools and processes effectively

ClaudeLLMsPrompt Engineering

Article

AI Glossary

Comprehensive glossary of AI terms and concepts

Connect

Landmarks

Work with me

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

Get in touch