Hannes graduated from the University of Veterinary Medicine, Vienna in 2001 and completed an internship at the School of Veterinary Medicine Hannover in Germany. Following research in perioperative pain therapy he achieved his Doctorate degree in 2003. He spent a year in small animal practice before taking up a three year residency in Small Animal Surgery at the University of Berne, Switzerland. He has worked in referral practice in the UK since 2007 and became a Diplomate of the European College of Veterinary Surgeons in July 2008. Hannes specialises in all aspects of surgery, including orthopaedics, soft tissue and spinal surgery and is working as an independent surgery consultant since December 2015.