I am the Director of the Curtin enAble Institute at Curtin University and previous Deputy Director of the Alcohol, Tobacco and Other Drug Research Unit at the South African Medical Research Council. I have adjunct appointments at the South African Medical Research Council and the University of Cape Town, within the Department of Psychiatry and Mental Health. A clinical psychologist by training, I am passionate about reducing health disparities and promoting social justice for vulnerable and underserved people globally. Over the past two decades, I have conducted clinical research focused on the development, testing, and implementation of psychological and health system interventions to improve access to, outcomes and quality of care for people with substance use and co-occurring mental and physical disorders. My work has a strong service user, workforce development, and systems strengthening focus. I have previously served as the Secretariat to the International Reference Group to the United Nations on HIV and Injecting Drug Use. I am currently a member of the UNODC’s technical expert group on International Standards and Quality Assurance for Drug Use Disorder Treatment.