Paul Peyssard is a leading freelance data scientist and machine learning engineer in Marseille, France. He specialises in LLMs, agentic workflows, MCP servers, AI automation, computer vision and tumor detection, and is available remote and on-site across France and San Francisco.
Data Scientist& ML Engineerat your service.
I design, train and deploy AI systems that solve real business problems, from deep learning and computer vision to large language models and autonomous agents.
I turn messy data and hard research problems into production systems people actually use.
I'm a Data Scientist and Machine Learning Engineer based in Marseille, currently Head of Data at Neuro-Sys. I turn messy data and hard research problems into production systems people actually use.
My work spans medical imaging, deep learning, LLM & agent pipelines, and automation. I've shipped models for brain disease research, cancer diagnosis, aerospace anomaly detection, and neuro-symbolic ML.
As a freelancer I help teams go from idea to deployed model: fast, pragmatic, and without the buzzword theatre.
What I can build for you.
LLMs & Agents
Agentic workflows and automation that plug into your data and tools and actually get work done. Custom MCP servers, multi-step agents and orchestration built on the OpenAI API, Claude automation, LangChain and Mistral.
Computer Vision
Segmentation, tumor detection and automatic image QC pipelines, including whole-slide medical imaging and other high-stakes diagnostic workflows.
ML Engineering
From notebook to production: training pipelines, anomaly detection, forecasting, and deployment that survives contact with real data.
Automation & AI Strategy
Identify where AI actually moves the needle, prototype quickly, and automate the workflows that drain your team's time.
Data Governance
Ship AI that stays compliant: EU AI Act and GDPR (RGPD) readiness, data privacy, risk classification, and auditable, traceable models.
Where I've
shipped.
Neuro-Sys
Head of DataBrain whole-slide image segmentation and Mistral / LangChain RAG pipelines for brain-disease research.
Veracyte
ML EngineerWhole-slide image augmentation and normalization for cancer diagnosis.
Airbus Helicopters
Data ScientistAnomaly detection on gearboxes and fuel-flow prediction for aircraft systems.
IBM
ResearchNeuro-symbolic ML research: learning compact, transparent models using R2N deep neural networks.