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…
Antonin Januska · Staff Engineer · Boulder, CO
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.
This site is a garden, not a feed. Notes are planted, tended, and marked by how finished they are. Wander by topic below, or follow any link to see what grows next to it.
- 20+Years building
- 600+GitHub stars
- 2012Blogging since
- Specimen
- Antonin Januska
- Habitat
- Boulder, Colorado
- Known as
- AntJanus
Topography over timelines
The garden, laid out by topic
Every note lives in a bed with its neighbours instead of in a date-sorted stream. Hover or focus a plant to peek at it before you go in.
How to read a plant
- SeedlingA rough, early note. Opinions that date quickly, or notes still being worked out.
- BuddingCleaned up and useful, still growing as the tools and my thinking change.
- EvergreenSettled. Reference material I keep coming back to and keep tending.
AI workflows
12 notes- AI-Friendly UI Pattern Library (Budding)
- The Future is Bespoke (Budding)
- The Local-First App Skill (Evergreen)
- State of Code Gen AI, Spring 2026 (Seedling)
- The Claude Code Drawbacks (Budding)
- Agent Compiler (Budding)
- Managing Dev Context (Seedling)
- SkillBox (Budding)
- Git Worktrees for AI Agents (Evergreen)
- All In On AI (Budding)
- AI Glossary (Evergreen)
- Claude Code Best Practices (Evergreen)
I, AI stories
3 of 5 parts- Part 1 · Spare Cycles (Budding)
- Part 2 · Unknowing Crowds (Budding)
- Part 3 · The Weight of Equal Parts (Budding)
- Parts 4–5 · coming
Fiction, written by hand, not by AI.
Digital Garden
11 notes- 17 Side Projects (Budding)
- React Hooks Antipatterns (Evergreen)
- The Simplest CSS Grids (Evergreen)
- Constants vs Enums (Seedling)
- Build React UI Library (notes) (Seedling)
- Where did my blog go? (Seedling)
- The Site Through Time (Budding)
- Anatomy of My Ideal React Component (Evergreen)
- Postgres FOR loop (Evergreen)
- "grep" in PowerShell (Evergreen)
- How I Structure My JS File (Evergreen)
Demystifying Tools
7 notesStart here
Three notes I'd hand to someone new to the garden.
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.
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.
Recently tended
What was planted or reworked lately. The garden changes; dates say when.
- Planted Sep 28, 2026Blast-radius confirmA confirm dialog that names everything a delete cascades and blocks dismissal while it runs.Seedling
- Tended Sep 28, 2026Hairline stat stripStat tiles joined by hairlines that are grid gap, not borders.Evergreen
- Planted Aug 14, 2026I Built an AI-Friendly UI Pattern LibraryA 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.Budding
- Planted Jul 9, 2026The Future is Bespoke, Personalized SoftwareSeven apps that are 100% right for one person, and why that category of software is about to get eaten.Budding
- Planted Mar 25, 2026An Honest Opinion on the State of Code Gen AI, Spring 2026 EditionA frank assessment of where code generation AI actually stands in 2026 -- from agentic harnesses to multi-agent architectures and what still needs to change.Seedling
AI experiments
Projects, tools, and creative AI work.
AI Workflow Consulting
Helping companies implement AI tools and processes effectively
Claude Code Best Practices
Guide to effective AI-assisted development
AI Glossary
Comprehensive glossary of AI terms and concepts
I, AI - Short Stories
Science fiction exploring AI themes and futures
Projects
- Programmer's Proverbs 600+ stars
- YouTube Channel AI & Dev
- Cottage UI React Library
Work With Me
I help companies implement AI workflows and accelerate their development teams.
Get in touch →