Stefan is currently Associate Director Quality Systems and one of the Qualified Persons at Takeda Pharma Oranienburg, one of two pilot plant manufacturing sites within the Global Takeda Manufacturing and Supply organization. The site produces around 150 solid dosage form products for more than 100 countries in the world. Stefan started at Takeda in 2012 as Associate Director Quality Control II. Between 2002 and 2012, he held different quality control positions at ProBioGen AG, a renowned German biopharmaceutical CDMO located in Berlin, Germany. He is a Registered Pharmacist by training holding a PhD in bioanalysis.