Executive board

Chairman of GTB

Dr. Klaudia Dussa-Zieger

Dr. Klaudia Dussa-Zieger is Principal Consultant at Method Park Consulting GmbH and has been involved in software testing and software quality for almost 20 years. She is convinced that “given the increasing complexity of today’s software systems, their development is not possible without testing”. In her specialist field, the continuous improvement of the test process as well as ensuring professional training and further qualification are of particular importance for her.

For more than 15 years she has been trainer for the ISTQB® Certified Tester Foundation and Advanced Level which allows her to pass on her long-standing experience. She herself holds the ISTQB® Certified Tester Full Advanced Level certification. Process and test improvements result from the assessments which she carries out as iNTACSTM Competent Assessor (ISO/IEC 15504) for Automotive SPICE. Her book „Software Engineering nach Automotive SPICE“ (German) is listed in one of the top positions in the Amazon bestseller  ranking for the relevant book category.

As Head of the special interest group “Software Test” at the Arbeitskreis Software-Qualität und -Fortbildung e.V. (ASQF, Association for Software Quality and Further Education) she supports an efficient transfer of knowledge and a continuous exchange of experiences. In addition to this, she lectures in software testing at the Erlangen-Nuremberg University in order to give students the know-how and skills required for their careers.

Since March 2009 Klaudia Dussa-Zieger is Chairperson of the DIN working committee „System and Software Engineering“ and is involved actively at an international level in the development of standards. The development of the new testing standard ISO/IEC/IEEE 29119 is only one of the topics she is in charge of in this context.
Vice chairman of GTB

Florian Fieber


Florian Fieber is founder and managing director of QualityDojo IT Consulting GmbH in Berlin and has been working as a consultant and trainer in the area of ​​quality assurance in software systems for almost 15 years. His focus is on test management, improvement of test processes and business analysis of enterprise applications. According to the company vision “Satisfied users through better software”, he supports his clients through strategic consulting and operative project support as well as with the qualification of employees and teams.

After studying Media Informatics and Information Systems, he initially worked as a software developer for enterprise applications and as a research assistant at the Beuth University of Applied Sciences Berlin. By chance, he got into software testing and found his passion for this topic. His activities have since evolved from manual testing to test automation to test management and requirements engineering, and today include all quality assurance aspects throughout the software lifecycle.

Mr. Fieber has been active as a trainer since 2006. He has developed a great deal of seminar content and conducted more than 100 ISTQB Certified Tester Foundation Level and Advanced Levels seminars. At the GTB, Mr. Fieber has started to further develop and establish the Certified Tester Scheme. Among others, he is involved as head of the Acceptance Testing working group as well as in the glossary and mobile working groups.

Vice chairman and founding member of GTB

Horst Pohlmann

Horst Pohlmann, born in 1958, studied Computer Science at the University of Paderborn and worked initially as a system developer in a branch of a software house belonging to the Rheinmetall group, where he first introduced the subject of software quality assurance. Following that, he implemented this in the areas of management and quality at various other software houses. He gained his comprehensive professional experience in various roles: as employee, in senior management and as member of the executive board with a focus on the subjects of software quality assurance, quality and project management and business process re-engineering.

Since 1984, Horst Pohlmann has been a member of the Gesellschaft für Informatik (GI) and has been active in the GI working party “Test, Analysis and Verification of Software” (TAV) since 1992. Together with Eike Hagen Riedemann and others, he was involved in the creation of the “TAV-Glossary of Testing Terms”, which was published in 1996.

From 2000 to 2005 Horst Pohlmann worked as IT Quality Manager/Head of Quality Management in the telecommunications industry. Since November 2005, Horst Pohlmann has continued with the subject of quality assurance at a well-known company in the automotive sector.

Horst Pohlmann is a founding member and was Chairman of the German Testing Board from April 2013-2015.

As part of his voluntary work there, he was involved in work on the ISTQB® Glossary and also on the Certified Tester syllabi. As treasurer, Horst Pohlmann was a member of the executive board at the umbrella association „International Software Testing Qualifications Board (ISTQB®) from 2007 to 2011, where he was also Working Group Chair of the EXAM working group from 2008 to 2010. Since the summer term of 2010, he has been associate lecturer for Software Quality Management at the University of Applied Sciences Ostwestfalen-Lippe.