About Julien
I am result oriented, love working and delivering. I read AI papers on a daily basis. I had the pleasure and opportunity to work with exceptional people. I am looking for a company I could see myself working for for the years to come.
AI engineer and product builder with a track record of founding a successful AI company (acquired) and shipping critical AI systems from zero to one. Expert in architecting and fine-tuning Large Language Models and agentic systems, demonstrated by creating a novel browser agent operating on pure HTML and a flagship legal AI product adopted by top-tier law firms. Seeking to leverage deep expertise in NLP, agentic AI, and system design to tackle foundational AI challenges at a world-class organization.
French
Native or bilingual
English
Fluent
Can work on-site
Paris (up to 10km)
Experience
- FreelancePrincipal AI/Machine Learning Engineer (Consulting)January 2023 - Today (3 years and 5 months)Paris, FranceLed high-stakes AI initiatives for a diverse range of clients, from startups to global corporations.
- Lightpanda (AI Browser Agent): Architected and single-handedly built a novel AI browser agent that navigates and interacts with websites using only the HTML page, without visual rendering. Developed a custom LXML parser serialization to create effective state representations for the agent. Fine-tuned models on the SWDE dataset for high-accuracy data extraction and CSS selector prediction from natural language queries, achieving performance competitive with vision-based agents.
- Jimini AI (Legal Tech): Led the conception, pitch, and development of the company's most successful product, an AI co-pilot for legal professionals. Engineered a suite of tools for error correction, inter-clause consistency validation, and automated legal reference discovery in complex contracts. The product was adopted by several of France's largest and most prestigious law firms.
- Vinci Construction (Industrial AI): Defined and delivered the strategic AI roadmap to integrate AI into core construction operations for one of the world's largest construction companies.
- EPIEOS (OSINT): Designed and implemented advanced AI solutions for a leading Open-Source Intelligence firm on highly sensitive, confidential use cases.
- EPITAProfesseur de Deep LearningEDUCATION AND E-LEARNINGNovember 2019 - Today (6 years and 7 months)Le Kremlin-Bicêtre, FranceCours de Deep Learning à une promotion d'élèves en dernière année d'école d'ingénieur en informatique.Traitement du langage, vision par ordinateur, analyse de séries temporelles, théorie mathématique.
- QwarryLead AI EngineerPRESS AND MEDIAJanuary 2019 - January 2021 (2 years)Paris, FranceLed the AI division for a venture-backed ad-tech startup founded by serial entrepreneurs.- Developed a pioneering semantic advertising platform that enabled privacy-preserving contextual targeting in cookieless and private browsing environments.- Engineered and scaled NLP models to perform real-time semantic analysis of web content, forming the core of the company's value proposition.
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Education
- EngineerEPITA2016Computer science engineer. Specialisation in Artificial Intelligence and Data Science.