Roland Fesenmayr - CEO

Roland Fesenmayr is the CEO of OXID eSales AG which was founded in 2003. In this position he is responsible for strategy and business development at the Freiburg company. Fesenmeyer has over 15 years experience in online business, and founded Virtual Identity AG in 1995. He also lectures at the Universities of Furtwangen and Freiburg. In addition, he is on the Executive Board of bw:con, a member of the Supervisory Board of hKDM (Freiburg University of Art, Design and Popular Music), and a member of the University of Furtwangen’s Board of Trustees.


Dr.-Ing. Oliver Ciupke - COO

Dr. Oliver Ciupke is responsible for Finance, IT, Law and Professional Services at OXID eSales AG. Since 2017 he is also part of the executive board. After being conferred with his doctorate, Ciupke started his career in 2001 at Xcc Software AG’s Research Center for Informatics in Consulting and Project Management in Karlsruhe. As the Campus Development Manager at Rockwell Automation Solutions from 2004 to 2009, Dr. Ciupke managed development in the area of pharma software, and headed up its subsidiary, GEPA mbH, a leading manufacturer for data management in automation technology. Prior to joining OXID, he was in charge of developing online products as Head of Software Development at Haufe-Lexware GmbH & Co. KG.


Gültekin Koc - Head of Support & Services

Gültekin Koc leads Support & Services at OXID eSales AG. He holds a degree in Electrical Engineering and has many years of experience in the areas of engineering, support & services and project management. Before joining OXID eSales AG he was for 11 years in charge of the Support Department of Teligent GmbH, an international company in the area of telecommunications. Prior to that he was entrusted with Engineering and Services at the Automation Technology department of the ALSTOM (AEG) group.


Joachim Ch. Siefer - Authorized Signatory, Head of Finance & Controlling

Joachim Ch. Siefer is responsible for finance, controlling, HR and legal. He holds a degree as Master of economics (diploma) and is since many years a member of the association “Freiburger Wirtschaftswissenschaftler”. In 1999, he began his career in the Licenses Department of a leading supplier of ERP software. In 2002 Mr. Siefer started working for the German market leader of electronic testing and measuring instruments where he was responsible for the controlling of the European and Asian locations and for the successful sale of the company group to an American industrial corporation in 2003. In 2004 he became authorized signatory and in 2007 he was appointed head of the finance and legal. 2011 Mr. Siefer joined OXID eSales AG and in 2014 he became authorized signatory.