Myles graduated from University College Dublin (UCD) in 2013. After some time in general practice, he completed an internship in small animal medicine and surgery at Cornell University, USA. He subsequently undertook a Masters of Veterinary Science at the University of Edinburgh, completing a thesis on dogs as sentinels of Lyme borreliosis in humans. In 2019 he completed a residency in small animal internal medicine and a Masters of Veterinary Medicine at the Royal Veterinary College, becoming a Diplomate of the American and European Colleges of veterinary internal medicine. After some time in private referral practice in Australia and the UK, he joined UCD as an assistant professor in internal medicine in 2020. His main areas of interest are infectious disease, hepatology and nephrology.