After graduating from Massey University in New Zealand, Brett completed an internship at Randwick Equine Centre in Sydney Australia and then worked in mixed large animal practice in the Waikato region of New Zealand for a number of years. In 2002, Brett began a 3-year residency in large animal (equine) internal medicine at the University of Illinois followed by a 2-year fellowship in large animal emergency and critical care at the University of Pennsylvania's New Bolton Centre. Brett has a masters in equine exercise physiology and is board certified with the American Colleges of Veterinary Internal Medicine. After his time at Penn, Brett was on faculty at the University of Georgia working in their teaching hospital and then worked for almost 10 years in the University of Melbourne's veterinary teaching hospital. In 2021, Brett and his wife Charity decided that they needed a change and made plans to move back to New Zealand in 2022; before coming home, Brett worked at Lethbridge Equine Hospital to help with their intensive medicine cases. Brett now lives in the Tasman Bay District in New Zealand's South Island where he works as a large animal ambulatory veterinarian.