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Claas Janssen is an experienced professional in online marketing and search engine marketing, currently serving as SEM-Manager at Bikeleasing-Service GmbH & Co. KG since October 2021. Previous roles include Social Media/Content Manager at Hogrefe Verlag GmbH & Co. KG for a brief period in late 2020, Online Marketing Manager at both Adresspark UG Haftungsbeschränkt and Blackbit digital Commerce GmbH from April 2020 to March 2020 and November 2017 to March 2020, respectively, and a long-term position as Online Marketing Manager at PFH Private Hochschule Göttingen from May 2009 to October 2017. Claas Janssen holds a Diplom Sozialwirt in Sozialwissenschaften from The University of Göttingen, achieved between 1996 and 2005.