Sebastian qualified from the University of Giessen, Germany in 2002 and went on to perform a rotating internship and a surgical internship at the University of Vienna, Austria. Afterwards he did his residency in Small Animal Surgery (surgical specialisation) at the University of Zurich, Switzerland. He became a Diplomate of the European College of Veterinary Surgeons in 2012. 

Following his residency, he worked as a senior clinician at the University of Zurich in Small Animal Surgery. In 2020 he left the University and worked as a senior surgeon in the Tierklinik Aarau West in Switzerland. 

In 2021 he finished his PhD at GCB in Bern about Pathomechanisms in Wobblers Disease. Sebastian joined the faculty team of the Small Animal Clinic at the University of Zurich in 2021 and works in small animal orthopaedics. He also became the head of the clinical infrastructure of the clinic for small animal surgery. Sebastian continued working in Aarau West part time. 

Sebastian has published several book chapters and articles in peer-reviewed veterinary journals and lectures regularly at national and international courses/conferences on small animal orthopaedics. He is currently finishing his habilitation about feline traumatology.