After graduating with a Bachelor of Veterinary Science from Massey University in 2004, Vince started work as a mixed-animal veterinarian in Gore. This role was mainly focused on dairy cows, but included a significant amount of sheep and beef work, as well as a companion animal and equine caseload. In early 2007, Vince moved to the UK, where he worked as a locum veterinarian with a focus on companion animal and emergency medicine.
He moved back to New Zealand in late 2008 to take up a position as a veterinarian, first in Whakatane and then in Christchurch where he founded Kahu Veterinary Equipment, a veterinary wholesaler. Vince continued to work as a companion animal locum veterinarian while establishing the company until the end of 2014. He is a managing director of Kahu Veterinary Equipment Ltd and Practical CPD Ltd. He is involved in organising veterinary education events and remains involved in the veterinary profession, with a special interest for orthopaedics and IT.