He pioneered many startups with a primary focus on women
Greene established the tech company, Technology Development Corporation. The objective of the entity was to conduct research and develop engineering services for the U.S. government. It built the avionics equipment for the General Dynamics F-16 Fighting Falcon, a communication system for scuba divers and a space shuttle program for the federal government.
Greene later founded ZeroOne Systems. It is a supercomputing systems house. Just two years into its operation, the company’s annual revenue hit $15 million.
In 1986, Greene founded NewVista Capital, a venture capital firm that pioneered many start-ups with a primary focus on women and minority business owners. He was given prominence in an exhibit at Palo Alto City as one of the 50 most important Black tech giants in 2009.