Management & Supervisory Board

Forward-looking Leadership For Sustainable Corporate Success

The great role that companies play in a society is becoming more anchored in the collective consciousness and is being understood more comprehensively scientifically. Far beyond the economic added value, corporations, medium-sized companies and small companies have a significant influence on the population and our world as a whole, the local region, the neighbors and employees in particular. Responsible leadership enables the highest added value for all parties.


Ulrich Weitz, CEO

Since the turn of the millennium, Ulrich Weitz has built up the IBU-tec Group. During this time, the small institute has grown into a group of companies with 5 locations and an international customer base.

After studying mechanical engineering in Paris, he gained management experience at OTIS, where he held positions in design, quality management and production. This was followed by a position as plant manager at Winkler + Dünnebier AG with responsibility for 750 employees.

Jörg Leinenbach, Co-CEO and CFO

At the company since 2015, Jörg Leinenbach has been responsible for the commercial processes as CFO since 2017 and at the same time manages all value-adding operational processes. In 2022, he was also appointed as Deputy CEO and henceforth leads the company in tandem with Mr. Weitz. Before joining IBU-tec, he worked at RAG Saarberg AG  in investment management and at  Prego Services GmbH as commercial division manager. Mr Leinenbach studied business administration at Saarland University and specialized in tax law as well as trust and auditing. His professional career has already included various management positions in investment management, controlling, investment and accounting.

Dr. Arndt Schlosser, Member of the Executive Board

At the beginning of 2020, Dr. Arndt Schlosser was appointed to the Executive Board. In January 2022, he was additionally appointed Managing Director of BNT Chemicals GmbH. In Gießen at Justus von Liebig University, he completed his studies as a graduate chemist, after which he received his doctorate in physical chemistry. After starting his working life at Wacker Chemie AG, his career led him to numerous management positions, in quality management, marketing and sales as well as in planning and research. Before joining the IBU-tec Group, Dr. Schlosser headed the Sealants & Adhesives business team at Wacker. His international management experience, gained in Germany, the Middle East, Latin America and the USA benefits the entire company.

Supervisory Board

Sandrine Cailleteau – Paris

Ms. Cailleteau has been on the company's board of directors since 2007 and serves as chairwoman since 2022. After completing her MBA in Paris, she worked for Sanofi in M&A and as a Licensing Director, since then she has held various management positions at well-known pharmaceutical companies (e.g., Hesperion, Fournier Pharma) in France, England and Switzerland and at the banking house of Michel Dyens & Co. In 2013 she founded the SCiH Advisory and is now managing director at RBC Capital Markets, an international investment bank, where she oversees the European Healthcare division.

Dr. Jens Thomas Thau – Berlin

Dr. Thau was appointed to the Supervisory Board of IBU-tec in 2012 and holds the deputy chairmanship. He also advises the Group on legal issues. He completed his studies in New York and Berlin, after which he worked as a repositorium coach and as a lawyer. Today he is managing director of AGV Banken, which he also advises as chief legal officer, is a member of the EBF banking committee and owner of Thau Rechtsanwälte. He is a specialist lawyer for employment law and holds current certificates from Deutsche Börse as a qualified supervisory board member and as a member of the audit committee.

Prof. Dr. Achim Kampker – Aachen

Prof. Dr. Kampker has been a member of the Supervisory Board of IBU-tec since 2022. He completed his doctorate in mechanical engineering at RWTH Aachen University. In addition, he earned an Executive MBA for Technology Managers at the University of St. Gallen. In 2014, he was appointed Professor of Production Engineering of E-Mobility Components (PEM) at RWTH Aachen University and has headed the chair since then. His positions also include managing ScreetScooter GmbH, which he co-founded as a partner in 2010 and with which he made a significant contribution to the development of electromobility in Germany.