Eduard Jonas underwent his pre-graduate training at the University of Pretoria, South Africa obtaining a MBChB in 1985. He did his surgical training at the University of Stellenbosch, becoming a Fellow of the South African College of Surgeons in 1995 and obtaining a MMed in general surgery.
He served as consultant surgeon in the Upper Gastrointestinal Service of the Department of General Surgery at the University of Stellenbosch and Tygerberg hospital before taking up an endoscopy fellowship position at Karolinska University Hospital, Stockholm, Sweden in 1997 where he obtained a PhD. He previously held clinical positions in Karolinska Institute affiliated hospitals, including the Departments of Surgery at Danderyd Hospital and Karolinska University Hospital.
He is affiliated to the Karolinska Institute as Associate professor and since 2015 is Professor of Surgery and Head of the Surgical Gastroenterology Unit at the University of Cape Town and Groote Schuur Hospital.