Bachelor of Science in Mechanical Engineering, Massachusetts Institute of Technology, 1989. Master of Science in Computer Science, Massachusetts Institute of Technology, 1990.
In 1990, along with Rodney Brooks and Colin Angle, Greiner co-founded iRobot, a robotics company headquartered in Bedford, Massachusetts, which delivers robots into the industrial, consumer and military markets. She co-designed the first version of the iRobot Roomba. Greiner served as President of iRobot (NASDAQ: IRBT) until 2004 and Chairman until 2008.
During her tenure, iRobot released the Roomba, the PackBot and SUGV military robots. She built a culture of practical innovation and delivery that led to the deployment of 6,000 PackBots with the United States armed forces. In addition, Greiner headed up iRobot’s financing projects, raising $35M in venture capital for a $75M initial public offering.
She has said she was inspired to work with robots by R2D2 in the original Star Wars. She has worked at NASA's Jet Propulsion Laboratory and the MIT Artificial Intelligence Laboratory. Greiner is currently CEO of CyPhy Works, home to the Persistent Aerial Reconnaissance and Communications (PARC) and Pocket Flyer multi-rotor drones.
She also serves on Open Source Robotics Foundation (OSRF).
Trustee Boston Museum of Science. Member of National Defense Industrial Association (director).