Konstantinos Tsagakis graduated in 1998 as a medical doctor at the University of Vienna, Austria. After his basic medical practice, he moved 2001 to Germany as resident in cardiac surgery in Heart Center North Rhein Westphalia in Bad Oeynhausen and since 2004 in West German Heart and Vascular Center of the University Hospital of Essen. In 2009 he performed the board exams for cardiac surgery and he continued as staff surgeon in Department of Thoracic and Cardiovascular Surgery in Essen. His specialization focused on open and endovascular thoracic and thoracoabdominal aortic repair and reconstructive aortic valve surgery. He habilitated as private lecturer in medical University of Duisburg-Essen in 2018. Currently, he is the Section Head of Aortic Surgery in the Department of Cardiac Surgery at the University Hospital of Essen.