Sebastian collaborates with Fortune 500 companies on AI solutions and serves on the Open Source Board at University of Wisconsin–Madison. He specializes in LLMs and the development of high-performance AI systems, with a deep focus on practical, code-driven implementations.

He is the author of the bestselling books Machine Learning with PyTorch and Scikit-Learn, Machine Learning Q and AI, and Build a Large Language Model (From Scratch).

• Founder - RAIR Lab
• Advisory Board Member - University of Wisconsin-Madison
• Senior Staff Research Engineer - Lightning AI