Tommy Li is Co-Founder and CTO at Praxis Robotics (YC S26), a physical AI data company that turns real-world human work into training data for frontier robotics models.

Tommy holds a BSE in Computer Science and Finance from the University of Pennsylvania and brings deep technical and financial expertise to the robotics space.

Tommy is a published IEEE researcher with hands-on research experience at NASA JPL and PerceptIn Robotics, giving him rare credibility at the intersection of academic robotics and commercial AI.

Prior to Praxis, Tommy worked in tech private equity at Morgan Stanley and industrial tech venture capital at Andreessen Horowitz, building a unique lens across capital markets and frontier technology.

Praxis captures egocentric human demonstration data across factories, warehouses, and homes, supplying model-ready training data to the labs and humanoid teams building the next generation of robots.