Roger has global health and international development experience as a researcher, clinician, civil servant, diplomat, policy adviser and technical consultant in various cultural contexts. In 2016, he was the United Nations Population Fund focal point coordinator of the Zika emergency response in Brazil.
He has held appointments as a tutor in biomedical research ethics at the Peninsula College of Medicine and Dentistry (UK), as a fellow in public policy at the University of North Carolina at Chapel Hill (USA), and as a senior lecturer in public health and anthropology at the University of Papua New Guinea.
He has recently completed a doctoral dissertation on medical professionalism. A fellow of the Royal Anthropological Institute (UK), he has earned diplomas in linguistics and tropical medicine and degrees in social sciences, bioethics, medicine, public health, African studies and music.