Decision-makers who create a successful future

Executive Board

Prof. Dr. Cai-Nicolas Ziegler

Chief Executive Officer

As Chief Executive Officer (CEO) of Immowelt, Prof. Dr. Cai-Nicolas Ziegler is in charge of the Corporate Strategy as well as the divisions Product Management, Brand Experience, Corporate Communications, Business Development & Media Sales and Human Resources.

He has completed his post-doctoral degree and has extensive management experience from working in companies in the digital economy: Before joining Immowelt he was CEO at XING Events, an expert in the events sector, and led the company to profitability. Prior to that he worked as Head of Global Product Management at PAYBACK GmbH in Munich and Bangalore, and as Strategy Consultant at the Boston Consulting Group. Before that he worked in the central research area of Siemens AG in Munich. Since 2010 Ziegler also teaches computer science at Freiburg University.

Ulrich Gros

Chief Financial Officer

Ulrich Gros has been Chief Financial Officer (CFO) of the Immowelt Group since it was established in 2015, in addition to being CFO of Immowelt AG since 2000. A graduate in Business Administration, he manages the divisions Digital Marketing & Analytics, Finance & Controlling, BI & Data Management and Customer Administration as well as Legal und Compliance. Since 2016, he has also been Managing Director of Immowelt Hamburg GmbH. A specialist in finance and strategy, Mr Gros began his career at Dresdner Bank AG and Dresdner Kleinwort Benson. He is also a graduate of Stanford University’s Stanford Executive Program.

Dr. Dominikus Kirchhoff

Chief Sales Officer

Dr Dominikus Kirchhoff has been Chief Sales Officer (CSO) of the Immowelt Group since March 2019. He is responsible for strategic planning and manages the Immowelt Group’s sales activities for portals and other products.

With a doctorate in Business Administration, Dr Kirchhoff has held senior positions in sales for over ten years and is an expert on digital advertising. His prior experience includes responsibility for sales at Groupon GmbH, as its Senior Director Sales and Head of Sales Germany & Switzerland. More recently, he was responsible for Autoscout24 sales at Scout24 AG and from early 2016 at Immobilienscout24, in each case as Vice President Sales.

Felix Ritter

Chief Technology Officer

Mr Felix Ritter is Chief Technology Officer (CTO) of the Immowelt Group and has been responsible for Technology & Engineering, Office IT, Software Business as well as Support throughout the Group since August 2019.

Before joining the Immowelt Group, IT expert Mr Ritter built up many years of management experience in digital advertising marketing, most recently as Senior Vice President for Engineering at Ströer Digital Media. Prior to that, the trained software developer was Head of Technical Development, later Vice President Technology at InteractiveMedia CCSP GmbH, the largest digital marketer in Germany. From 2009 to 2012, Mr Ritter held several senior management positions at AOL’s subsidiary ADTECH, an international company providing software and platform solutions for digital marketing.


Björn Sass

Dr. Björn Sass

Managing Director Immowelt Hamburg GmbH

Christian Gimbel

Christian Gimbel

Managing Director Umzugsauktion GmbH & Co. KG

Frank Bohnert

Frank Bohnert

Managing Director Umzugsauktion GmbH & Co. KG

Jan-Philipp Kötting

Jan Philipp Kötting

Managing Director
Immosolve GmbH

Ante Tabak

Ante Tabak

Managing Director Crozilla
(Digitalni klik d.o.o.)