Antonin Januska · Staff Engineer · Boulder, Colorado
20+ years of software development, writing about AI workflows, technical leadership, and the craft of building things.
Antonin JanuskaAntJanus on the internet
z −1 · Start here
Hand-picked: two recent essays on building software for an audience of one, and the React component structure I still use.
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.
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.
A walkthrough of my very opinionated React Component.
z −2 · AI
Workflows, tools, and experiments
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.
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.
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.
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.
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.
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.
z −3 · Digital Garden
Engineering, opinions, and deep dives
A 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.
Learn about common React Hooks antipatterns and how to avoid them for better code quality.
Learn the most common CSS Grid layouts with copy-pastable examples for two-column layouts, sidebar navigation, and more.
TypeScript tips and tricks
z −4 · Experiments
Projects, tools, and creative AI work
Service
Helping companies implement AI tools and processes effectively
Claude, LLMs, Prompt Engineering
Article
Guide to effective AI-assisted development
Claude Code, TypeScript
Article
Comprehensive glossary of AI terms and concepts
Experiment
Science fiction exploring AI themes and futures
Creative Writing, AI
z −5 · Open source
Public repositories on GitHub
React, TypeScript
A React component library built alongside a YouTube tutorial series. Clean, reusable, well-tested code.
Python, TUI
Photo organization TUI with video sorting support. Organizes photos into year/month/date folders. Built a TUI around the original script for a better workflow.
View on GitHub →TypeScript, Next.js, MCP, zod
A dashboard and Model Context Protocol server for a project portfolio whose entire state lives in markdown files. Twenty-five zod-typed MCP tools let Claude Code read roadmaps, advance sessions, and work QA queues without anyone opening the UI. No database: the files are the source of truth, and git is the audit log.
Claude Code, SKILLs
A collection of personal prompts and utility prompts packaged as SKILLs for Claude Code. Easily installable via npx.
View on GitHub →TUI, Claude Code
A TUI for embedding skills into a CLAUDE.md file so Claude has a higher chance of picking them up.
View on GitHub →A collection of proverbs from the programmer. Went viral with hundreds of stars and contributions from the community.
Markdown
Personal VIM/Neovim configuration that ended up featured in the video game Watch Dogs 2.
Vim, Shell
A lightweight CSS framework focused on simplicity and clean design.
CSS
A Babel plugin that adds JavaScript namespace support for cleaner code organization.
JavaScript, Babel
A file-based content management system built on Node.js for simple, flat-file websites.
Node.js, JavaScript
z −6 · Elsewhere
I help companies implement AI workflows and accelerate their development teams.
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