Our Team

Meet the Rapid Flow Team

Stephen Smith, Ph.D.

Founder and Chief Scientist

Steve is the co-inventor of the Surtrac adaptive traffic signal control system. He pioneered the development and use of constraint-based search and optimization models and has successfully fielded AI-based planning and scheduling systems in a range of application domains. Steve is a fellow of the Association for the Advancement of Artificial Intelligence (AAAI) and a Research Professor in the Robotics Institute at Carnegie Mellon University, where he is the Director of the Intelligent Coordination and Logistics Laboratory.

Greg Barlow, Ph.D.

Founder and CTO

Greg is the co-inventor of the Surtrac intelligent traffic signal system and is leading development of the Phaenon urban analytics system. He is a member of the Transportation Research Board (TRB) Traffic Signal Systems Committee, where he serves as chair of the Technology and Standards Subcommittee. Greg has a Ph.D. in Robotics from Carnegie Mellon University and has worked in research labs at Carnegie Mellon, NC State, and the US Naval Research Laboratory.

Griffin Schultz

Griffin has a unique leadership background in both the public and private sector. After earning his MBA from The Wharton School at the University of Pennsylvania, he has worked with five pioneering technology companies, three as the General Manager or CEO. Prior to his MBA, Griffin worked in US politics and government on Capitol Hill, for a US Senate and Presidential campaign, and as the Assistant Deputy Mayor for the City of Philadelphia.

Hsu-Chieh Hu

Research Scientist

Hsu-Chieh is a research scientist for the Surtrac scheduler, focusing on planning, reinforcement learning, multi-agent systems and their applications in real world problems. He received a M.S. in Machine Learning and a Ph.D. in Electrical and Computer Engineering, both from Carnegie Mellon. Prior to that, he worked in the communication industry for three years as a software engineer.

Rodrigo Oberlander

Implementation Engineer

Rodrigo is one of Rapid Flow’s implementation engineers, tasked with deploying and maintaining Surtrac intersections. He has a M.S. from Carnegie Mellon, specializing in Advanced Infrastructure Systems.

Joe Zhou, Ph.D.

Project Scientist

Joseph is an expert in connected vehicle communication (V2X) and has extensive experience applying AI algorithms for planning and scheduling. In addition to his Ph.D., he also holds a certificate of PMP. 

Interested in Joining our Growing Team?

View Careers