Sebastien Martineau

AI Systems Architect & Data Scientist

Sebastien is an Unreasonable Mentor. Sebastien was part of Unreasonable Impact Americas 2025, and has advised over 19 Unreasonable companies.

I'm an independent AI Systems Architect based in Montreal, with 20+ years of experience turning complex, ambiguous problems into production-ready AI systems.

I've worked across insurance, banking, telecom, retail, and manufacturing — building agentic workflows, predictive models, and data pipelines that teams can actually own and run themselves. I believe in understanding the problem deeply before writing a single line of code.

As a mentor, I'm here to help founders cut through the AI noise — whether that's validating a technical direction, scoping what's actually buildable, or thinking through how AI can create real leverage in their business.

Learn more at https://sebastienmartineau.ai