Dr Greene is Founder of EOS, one of the largest Defence-Aerospace corporation in Australia. He served as its Group Chief Executive Officer from 1986-2022.
From 1971-1986 Dr Greene was employed by the Commonwealth of Australia as Director of national programs for space, national standards in time and frequency and team leader for several bilateral US-Australia space programs.
Dr Greene has also served in advisory roles to several Prime Ministers and other government Ministers, as well as serving in other government executive and advisory roles while EOS CEO. Throughout his career Dr Greene has always occupied the role of Chief Innovation Officer, or equivalent, in both government and corporate environments. He has always maintained a leadership role in advanced technology programs.