Ollie Jay is Professor of Heat and Health and Director of the Heat and Health Research Incubator and Thermal Ergonomics Laboratory in the Faculty of Medicine and Health at The University of Sydney. His research activities primarily focus on developing a better understanding of the physiological and physical factors that determine human heat strain and the associated risk of heat-related health problems during work and/or physical activity, as well as among the general population during heat waves.

Ollie is a NHMRC Investigator Grant (Leadership Level 1) recipient for his research program entitled "Heat and Health: Building resilience to a warming planet across the human lifespan". Ollie has led several large-scale projects that have directly influenced international public health heatwave policies in the United States and Europe. He has also led extreme heat policy development for Sports Medicine Australia, Tennis Australia (Australian Open) and Cricket Australia. He was recently profiled by The Lancet in their 2021 Heat & Health Series, and his research program was featured in a 2020 Special Issue of Science (Cooling in a Warming World) highlighting its lead global contribution to protecting society’s most vulnerable to the heat.

To date, Ollie has a career total of >190 peer-reviewed publications in journals such as Lancet, JAMA, Annals of Internal Medicine, Lancet Planetary Health, Nature Communications, Nature Reviews Disease Primers, Journal of Physiology (London), Medicine and Science in Sport and Exercise, and Journal of Applied Physiology. He has been a recipient of the Vice-Chancellor’s Award for Excellence: Outstanding Research and Teaching (2017), and Outstanding Leadership and Mentoring (2022), a University of Sydney Research Accelerator (SOAR) Fellowship (2018), and a SUPRA Research Supervisor of the Year (2018 & 2019).