· Associate Professor, Carnegie Mellon University Robotics Institute2017–
· Researcher, Disney Research Pittsburgh2014–2017
· Indie Game Creator, TCHOW (sole proprietor)2012–2014
· Researcher (Summer Intern), Adobe Creative Technologies Lab2009–
· Lead Graphics/Engine Programmer, Chronic Logic2006–
· PhD Student, Carnegie Mellon University2005–2010
· Central Tools Programmer, Electronic Arts Redwood Shores2005–
· Undergraduate Student, University of Michigan2001–2005
· Alumnus, John Jay College of Criminal Justice1974–
· Founder & Chairman, 1-800-FLOWERS.COM, INC.
· Various Roles, EMC
· Various Roles, Informix Software
· Board of Trustees, John Jay College of Criminal Justice
· Board of Directors, Willis Group Holdings Limited