prof. Dr. cai-nicolas Ziegler

Persönliche Daten

Year of birth






Professional Career

since 2022

Chairman of the Management Board (CEO) at doctari group, Berlin

since 2015

University Professor at Albert-Ludwigs-Universität, Freiburg

2019 − 2022

Chairman of the Executive Board (CEO) at immowelt Group AG, Nuremberg

2014 − 2019

CEO at XING Events GmbH, Munich

2011 − 2014

Director Product Management and Social Media at PAYBACK GmbH (American Express), Munich

2008 − 2011

Management Consulant (Project Leader) at Boston Consolting Group, Munich

2005 − 2008

Technical Consultant at Siemens AG, Corporate Technology, Munich

2003 − 2015

Scientific employee and lecturer at Albert-Ludwigs-Universität, Freiburg

2000 − 2010

Freelance journalist and staff writer


Freelance Software Engineer at SNT AG, Frankfurt am Main


Prof. Dr. Cai-Nicolas Ziegler is CEO of the health tech company doctari group. Previously, he was CEO of the real estate platform immowelt and of XING Events. Prof. Dr. Cai-Nicolas Ziegler habilitated at the University of Freiburg in 2010 after studying Computer Science at the Universities of Passau and Freiburg in Germany and in Québec, Canada. The Computer Science professor (specialization in Artificial Intelligence) has in-depth knowledge of digital business development, as well as data and advertising technologies, which are of particular relevance to the work of ProSiebenSat.1 Group.