About Julien
French
Native or bilingual
Spanish
Fluent
English
Fluent
Experience
- DatifySaaS CreationMEDICALFebruary 2025 - Today (1 year and 4 months)Madrid, SpainDevelopment of a complete medical data pipeline: extraction, cleaning, analysis, reporting• Integration of local LLMs (Deepseek, Llama)• Implementation of multimodal extraction tools (LLM, advanced RAG, PDF parsing,OCR).• Automation of statistical analyses (tests, regressions, survival, power...).• Implementation of a GDPR framework: anonymization, security...• Optimization of LLM usage (cache, costs, workflows)
- LIS Data SolutionsData Scientist / AI R&D EngineerCONSULTING AND AUDITSMarch 2023 - September 2025 (2 years and 6 months)Madrid, Spain• LLM deployment, LangGraph/LangChain agents, production of agentic pipelines.• Design and production deployment of complex RAG pipelines on multimodal documents• Technological watch and selection• Cost/risk estimations• Support for technical teams & clients• Integration of self-hosted / cloud LLMs• System design and implementation. Text To Speech (TTS) / Speech To Text (STT). Production deployment (FastAPI, Docker)
- IndépendantData Scientist / AnalystTECHMarch 2021 - March 2023 (2 years)Nantes, FranceML, NLP, vision, and data analysis missions.• Training of custom ML models• Customer segmentation, recommendation, NLP• Automation of pipelines & operational deliverables• Creation of interactive dashboards on Tableau and PowerBI
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Education
- Master Data ScienceCentraleSupélec x OpenClassrooms2022Master Data Science
- MScESC Rennes2016MSc