Billie is a health behaviour scientist in the Faculty of Health and Medicine and Women in STEMM Chair at the University of Newcastle. Her research focusses on developing and evaluating methods to help people change their health behaviours and improve their well-being. She is currently leading a number of smoking cessation trials which target priority populations such as those with mental illness and physical co-morbidities, the unemployed and homeless, and people with drug and alcohol addiction. She is recognised for her outstanding research and training with the 2016 Thoracic Society of Australia New Zealand’s President Prize for tobacco control and the 2018 Australasian Professional Society for Alcohol and other Drugs Outstanding Mentor Award. She is passionate about equity and diversity in academia and leads the University's Athena SWAN initiative to increase female representation and leadership in STEMM.