Drago Heler has been engaged in philosophy for over 35 years. His early interest was in Anglo-American analytical philosophy. In the past 20 years he has concentrated on the social, political and moral philosophy of the European tradition, as well as maintaining an interest in Eastern (and other non-western) philosophical traditions. He has taught in the adult education system for 30 years, and has lectured and tutored at a number of universities over the past 20 years: including political philosophy at Sydney University; business ethics at Wollongong University; bio-medical and computer ethics at the University of New South Wales; media ethics and philosophy of law at Charles Sturt University; and social and political philosophy, the philosophy of technology and engineering ethics at the University of Western Sydney. His degrees are from the University of Sydney.

In the 1980's he was particularly active in the nuclear disarmament movement: for a number of years as an executive board member of People for Nuclear Disarmament, and for 3 years as the coordinator of campaigns of affiliated local groups.