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.
About
Hi, I'm Antonin.
Staff Engineer building AI-backed systems, engineering standards, and the workflows that let teams ship serious software.
Staff engineer focused on the infrastructure production LLM systems run on: evaluation harnesses, multi-provider dispatch, rate-limit handling, and guardrails on model output.
Start here · 3 of 35
Three pieces worth your first ten minutes
AI-011AI WorkflowsThe 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-010AI DevelopmentThe 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.
DG-004EngineeringThe Anatomy Of My Ideal React Component
A walkthrough of my very opinionated React Component.
AI & Machine Learning
Workflows, tools, and experiments
AI-012AII 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.
AI-009AIAn 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.
IAI-3I, AI storiesI, 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, Lili and Sophie are sent off-world.
AI Experiments
Projects, tools, and creative AI work
AI Workflow Consulting
Helping companies implement AI tools and processes effectively
ServiceClaudeLLMsPrompt EngineeringAIX-02Claude Code Best Practices
Guide to effective AI-assisted development
ArticleClaude CodeTypeScriptAIX-03AI Glossary
Comprehensive glossary of AI terms and concepts
ArticleAIX-04I, AI - Short Stories
Science fiction exploring AI themes and futures
ExperimentCreative WritingAIWork with me
Bring AI into how your team actually ships.
I help companies implement AI workflows and accelerate their development teams.
Get in touch →