ai engineer / fullstack developer @ l420 — freelance
jan 2026 — presentremote / toulouse, france
- Competition economists and lawyers cannot afford an AI that invents. That is where L420 started: making French Competition Authority decisions searchable in natural language, but with sourced, verifiable, auditable answers.
- I built the product alone: RAG engine, chat interface, citation logic, history, authentication, billing, OAuth, an MCP connector for ChatGPT/Claude, deployment, and observability. The work was not just finding semantically similar text; it was showing which decisions were consulted, which ones were cited, and which paragraphs support the answer.
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