Christophe Bajan

– Developed MADGUI, a graphical Python interface enabling Bayesian optimization and machine learning model building for materials design and process optimization. – Conducted benchmarking of Large Language Models (LLMs) for materials science. – Created a CrewAI-based multi-agent system designed to act as a research assistant for materials science, integrating LLMs (Phi, Llama, Mixtral) with retrieval-augmented reasoning pipelines. – Supported industrial partners in improving formulations and experimental workflows. – Daily use of PyTorch, HuggingFace, Scikit-learn, TensorFlow, and Llama-index. – Experience in data cleaning, feature engineering, and model evaluation pipelines. – Experience in SEM images analyses, modelisation and properties simulation using OpenPNM and PoreSpy. – Implemented version control and CI/CD pipelines using GitHub, Git, and GitHub Actions for reproducible research and automated testing.

– Monitored budgets for 11 dismantling projects at CEA Saclay, ensuring financial compliance and efficiency. – Implemented and tracked comprehensive risk analyses to mitigate project uncertainties. – Drafted detailed reports on costs, planning, and risk assessments, enhancing project transparency. – Developed precise project timelines, contributing to the successful execution of dismantling initiatives.

– Engineer in charge of battery tests in Groupe PSA's Research and Advanced Innovation Department. – Battery Test Engineer at Groupe PSA. Test Management and Planning (Planning, Adaptation of Requirements, Selection of Acquisition Devices, Test Initiation and Monitoring, Data Processing and Debriefing). – Tools used: PATools, EC-lab, BTS600, CANalyzer, CSM config, Texense, Matlab. – Management and monitoring of external tests on behalf of PSA by external companies. – Monitoring and management of current investments, communication with the various suppliers. – Maintain and monitor laboratory maintenance by internal and external teams on the site.

– Conducted research on the mechanical properties of Zirconium-Niobium alloy (Zr0.2Nb) through synthesis and physical deformation. – Utilized advanced analytical techniques including X-ray diffraction, Nano-indentation, and EBSD to assess material properties. – Contributed to understanding the impact of dislocations on alloy performance, enhancing material applications in engineering.

– Setting up the customer installation modification process. – Understanding how the different group inside the company works and setting up an internal protocol for managing a customer request. – Use of the office pack, preparation of presentations, attendance at meetings and writing of meeting minutes. – Redaction of a new protocol for helping the collect of information by the technician on site.

– Internship at the Institute of Nuclear Physics of Orsay (IPNO): Radiochemistry Group. – Subject on the measurement of the specific surface area of thorium oxide. – Learning laboratory work and preparation and analysis of a thorium oxide by X-rays and BET method.