Jeffrey is a clinical and academic nephrologist affiliated with The Wollongong and Canterbury Hospitals, and postdoctoral research fellow at The George Institute for Global Health, UNSW Sydney.He is active in cardiovascular-kidney-metabolic health research. His highly cited PhD program of work has influenced eight major international clinical practice guidelines, scientific statements, and position papers on the management of cardiovascular disease in patients with kidney disease. Until recently, he held a prestigious appointment as Editorial Intern with the American Journal of Kidney Diseases (2022-2023), one of the leading journals for clinical nephrology worldwide. He is a member of the Australasian Kidney Trials Network (AKTN) CKD Working Group, and serves on the committees of several large international clinical trials. His special interests include hypertension, pregnancy-related hypertension, cardiorenal syndrome, kidney supportive care and geriatric nephrology.