About Julien
- Development of specialized RAG applications (medical, accounting, insurance, dog training).
- Creation of multi-agent systems for complex analysis automation (OCR, FEC, clinical documents).
- Implementation of anomaly detection pipelines (insurance fraud, finance).
- Applied research: new prediction methods in marine biodiversity (+30% performance vs SOTA).
French
Native or bilingual
English
Fluent
Experience
- InriaResearch Engineer in Deep Learning & LLMPUBLIC SECTORMay 2023 - Today (3 years and 1 month)Montpellier, FranceSituation: Development of an innovative approach to predict fish species assemblages using Generative AI (LLMs).Task: Transform continuous data into an LLM-interpretable format to predict fish assemblages.Actions:- Conducted a literature review- Built a baseline ML pipeline (XGBoost)- Designed an original dataset- Fine-tuned LLM models (GPT-2, Llama2)- Optimized hyperparameters- Compared performance- Wrote a scientific paperResult: Revolutionary predictive method achieving 30% higher performance than traditional approaches. Innovative methodology intrinsically modeling inter-species interactions.Stack: Python, Hugging Face, PyTorch, Scikit-learn, XGBoost, Dash, Matplotlib, Seaborn, Geopandas, Git/Github
- Mutuelle SantéData Scientist & Data Engineer for Anomaly DetectionHEALTH AND WELLNESSJanuary 2023 - August 2024 (1 year and 7 months)Montpellier, FranceSituation: Development of a hybrid anomaly detection system for healthcare reimbursements across a network of 10 mutual insurance companies (2.8M beneficiaries).Task: Design and implement a complete anomaly detection architecture combining traditional statistical methods and Generative AI (LLMs).Actions:- Designed an ETL pipeline- Developed multi-scale temporal features- Implemented an ML ensemble approach (Random Forest, XGBoost, SVM)- Deployed an inference pipelineResult: High-performance anomaly detection system achieving Recall = 0.40 and Precision = 0.55, outperforming rule-based solutions.Stack: Python, DuckDB, Polars, Pandas, Scikit-learn, NumPy, Matplotlib, Seaborn, XGBoost, PyTorch, Jupyter, Git/Github, Advanced SQL
- FintechAI Engineer & Data ScientistBANKING AND INSURANCEAugust 2024 - February 2025 (6 months)Montpellier, FranceSituation: Development of an innovative solution for automated analysis of FEC (Fichier d'Écritures Comptables - Accounting Entries File), combining conversational AI agents and automatic Python code generation.Task: Design and implement a multi-agent system powered by LLMs to automatically analyze accounting data and generate custom Python code.Actions:- Designed a multi-agent architecture- Built a code generation engine- Implemented an RAG system- Created a secure sandbox- Developed a FastAPI backend with a Streamlit interfaceResult: Functional POC reducing analysis time from half a day to a few minutes, enabling non-developers to generate complex analysis code via natural language.Stack: Python, FastAPI, Streamlit, LangChain, LangGraph, LangSmith, OpenAI API, ChromaDB, FAISS, Hugging Face, Sentence Transformers, Pandas, NumPy, Docker, Git/GitHub, Pydantic
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Education
- Certified AI EngineerAI Makerspace2025Ingénieur IA Certifié
- Certified Data ScientistMines ParisTech2023Certification Data Scientist