Adjunct Professor, Department of Diabetes
- 2017 – Present, Adjunct Professor, Department of Diabetes, Central Clinical School, Monash University, Melbourne, Victoria, Australia
- 2016 – Present, Visiting Professor, University of Belgrade, Serbia
- 2016 – Present, Professor and Chair of Internal Medicine, Chief Physician, Abdominal Center Nephrology, University of Helsinki and Helsinki University Hospital
- 2010 – 2015, Professor and Chair of Nephrology, Chief Physician, Abdominal Center Nephrology, University of Helsinki and Helsinki University Hospital
- 2009 – 2017, Honorary Appointment as Baker IDI Professorial Fellow (Professor)
- 2006 – 2010, Head, Department of Diabetes Genetics, Folkhälsan Institute of Genetics
- 2001 – 2005, Research Director, Folkhälsan Research Center
- His research is focused on the dissection of the pathogenesis of diabetic complications with special emphasis on diabetic nephropathy.
- Initiated the large, nation-wide FinnDiane Study in 1997. To date, this landmark study comprises more than 9000 patients with type 1 diabetes and their family members recruited via a comprehensive network of 92 hospitals and health care centers throughout Finland.