About · Boulder, Colorado

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. Twenty years of building software, most of it lately in domains where a confidently wrong answer is worse than no answer.

Portrait of Antonin against greenery
20+
Years building
600+
GitHub stars
2012
Blogging since
Principles

Five proverbs I actually follow

From Programmer's Proverbs, the repo that went viral.

See the proverbs project
  1. A deployed MVP is worth two prototyped.
  2. Dance like nobody is watching, code like everybody is.
  3. Today's fashion is tomorrow's legacy.
  4. Debugging becomes easier if you first admit that you are the problem.
  5. The best code is no code at all.
Antonin hiking in Colorado
Beyond code

The rest of the operating system

Photography

I shoot animals, landscapes, people, and street scenes. The camera is how I stay observant.

Fiction

I write AI-themed fiction and short stories when technical writing is not enough.

Podcasts & Games

I have opinions about Final Fantasy, narrative design, and the overlap between games and technology.

Capabilities

What I work with now

The stack changes. The throughline doesn't. I'm usually working where backend systems, product delivery, and AI workflows collide.

AI & LLM Systems

Measuring model output, routing it across providers, and trusting none of it by default.

LLM Evaluation & Judge GradingMulti-Provider LLM DispatchToken Budgeting & Rate-Limit EngineeringStructured Output & GuardrailsModel Context Protocol (MCP)Agent Tooling & Orchestration

Languages

Python on the backend, TypeScript for everything else, SQL wherever the data lives.

PythonTypeScriptSQL

Platforms & Tools

Async services on Kubernetes, databases picked per job, front ends in React or Svelte.

FastAPIRedisPostgresSQLiteKubernetes on AzureReact & Next.jsSvelteKit

Leadership

Setting technical direction and standards, then reviewing what ships against them.

Technical StrategyEngineering StandardsCross-Team DeliveryCode ReviewMentoring
Work with me

Let's build something that survives real usage.

I help teams implement AI-enabled product work, sharpen engineering practices, and build systems that survive real usage.

Get in touch