I'm Fabien Antoine — I build products from zero to production and scale the teams behind them. First engineer in, last to leave the codebase. Currently CTPO at MeltingSpot, based in France.
I'm the person you bring in when there's no codebase yet — and you need one that will still make sense two years from now.
Over 17 years, I've done it four times as co-founder and first engineer: picked the stack, shipped the first lines, hired the first engineers, and built the processes that let teams scale without burning out.
I combine strong technical ownership with product instinct — I care about architecture because I care about shipping. I work AI-native: I don't just build AI features, I use AI at every layer of how I work.
I've taken products from zero to production, navigated a successful acquisition by TotalEnergies, and shipped products used across Europe, Africa, and the Americas — touching Energy, HealthTech, Digital Adoption, and more.
When I'm not doing that, I'm tinkering — side projects, open source, or just building things that scratch my own itch. It's how I stay sharp and ahead of the curve.
Personal projects, experiments, and open-source contributions. Everything here started with a "what if I..."
Turn Claude into a room full of experts. A Claude Code plugin & Desktop extension for multi-persona discussions — get structured disagreement from security experts, architects, and strategists in the same conversation.
A mobile app bringing the concept of daily mini-games — think LinkedIn puzzles, but with a wider variety of brain teasers and challenges, fresh every day.
A cross-platform QR code generator written in Haxe — compiles to multiple targets including JavaScript, C++, and Neko.
A system of typed extern definitions for Node.js in Haxe — similar to DefinitelyTyped for TypeScript. Includes extensions for Connect, MongoDB, SourceMap, and more.
A Symfony bundle that adds automatic CSRF token handling to routes — creation, validation, and configuration via route annotations.
From R&D engineering to co-founding startups and leading product & tech organizations.
Computer Engineer — Software Engineering
Open to interesting conversations, collaborations, and new challenges.