Portrait of Antonin against greenery

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.

LinkedIn GitHub Boulder, Colorado
20+Years building
2012Blogging since
600+GitHub stars

Principles

A deployed MVP is worth two prototyped.

Antonin hiking in Colorado

Beyond Code

The rest of the operating system

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