Professor Cebon is the Medical Director of Cancer Services at the Olivia Newton John Cancer & Wellness Centre (ONJCWC) at Austin Health in Heidelberg, Victoria and the Director of the Ludwig Institute for Cancer Research.   He is a lead investigator in the Victorian Cancer Agency funded Melbourne Melanoma Project. He serves on the Cancer Council of Victoria and is a member of the Consultative Council of the Victorian Cancer Agency. He is a member of Cancer Trials Australia, is a past chair of the grant Review Committee of Melanoma Research Alliance and serves on the Scientific Committees of the Cancer Vaccine Collaborative (CVC) and Cancer Research Institute (CRI), both organizations that play a major international role supporting basic, translational & clinical research into the immune therapy of cancer.

A key focus of his research over the past 20 years has been the investigation of the power of the immune system to treat cancer. His clinical area of interest is the immune therapy of cancer and developmental therapeutics particularly for the treatment of melanoma. He holds professorial appointments at both Melbourne and La Trobe Universities and is a Fellow of the Royal Australasian College of Physicians.