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Rainer Gläß

Chief Executive Officer
Chairman of the board

Rainer Gläß founded G&K Datensysteme GmbH together with his business partner Stephan Kronmüller in August 1990. The company was renamed GK SOFTWARE AG in 2001. After graduating as an engineer in information technology from the University of Dresden, Rainer Gläß spent several years working in various areas of software development – first as an application programmer and later as a project manager. Building on this experience, he and Stephan Kronmüller initially focused on developing business solutions for SMEs, before the company turned its attention to Java-based solutions for retailers in the mid-nineties. Based on the innovative GK/Retail Suite that evolved in the that years followed, Rainer Gläß has led GK SOFTWARE to become one of the key international software suppliers for integrated store solutions, employing more than 1.247 people and joining the Prime Standard on the Frankfurt Stock Exchange in 2008.

Rainer Gläß has received numerous awards in recognition of his outstanding achievements, including being named "Entrepreneur of the Year" in 2010.

In his spare time, he enjoys reading and sports, including cycling and tennis. Skiing is one of his particular passions, and he has written a book on the subject.



André Hergert

Chief Financial Officer
Member of the board

Since 1991, after graduating in business management and political science from the University of Lüneburg and Loughborough University, André Hergert has worked as an accounting manager and financial director at various companies in the financial and IT sectors. In 2006 he became partner at a management consultancy firm focused on mergers & acquisitions consulting, strategic consulting and development of internal and external reporting. André Hergert has been a member of the management board at GK Software SE since 2008.



Harald Göbel

Senior Vice President Customer Solutions & Services
Member of the Group Management Board

hgoebel webHarald Göbel has had 35 years of outstanding expertise in the retail sector and computer science; he gained this in responsible positions at major, international companies. He was in charge of introducing significant IT projects at retail companies for several years, before he worked in “C-level” positions at leading providers of IT solutions. He took on the newly created job of Client Executive at GK Software SE in 2013 and was responsible for relations with some of the company’s most important international customers as the direct contact person for CEOs and CIOs.

He took over as Senior Vice President of the Customers Solutions & Services department at the end of 2015 and became a member of the Group Management Board at GK Software SE.



Michael Jaszczyk

CEO GK Software USA, Inc.
Member of the group management Board

Michael Jaszczyk draws on an extensive wealth of experience, both in software development for the retail sector and as a manager at international IT companies, including MCRL AG, Pironet AG and SA2 Retail AG. He joined GK Software SE to lead the OpenScale business in late 2010 before becoming CTO in Nov. 2011 and CEO of GK Software USA.



Stephan Kronmüller

Deputy chairman of the management board – Manager of Futurelab
Member of the group management Board

He has almost 30 years of experience in the IT sector as a software developer, consultant and manager. Before becoming involved with GK SOFTWARE, he worked as a development manager in financial software. Stephan Kronmüller co-founded G&K Datensysteme GmbH (now known as GK SOFTWARE SE) with his business partner Rainer Gläß in 1990.

Stephan Kronmüller graduated as an engineer in information technology from the University of Chemnitz.