Jörg Leinenbach has been with IBU-tec since January 2015. Since then, he went on to lead the Group as CEO with a special emphasis on the value-adding processes and also manages the commercial side of the Group. Before joining IBU-tec, Mr. Leinenbach worked for Prego Services in Saarbrücken as a division manager in commercial management. He studied business administration at Saarland University, majoring in auditing and trusteeship as well as tax law. In his career to date, he has held various management positions in accounting, controlling and investment management.
Ulrich Weitz began shaping IBU-tec to its present form in 2000 and successfully took the company public. As CEO, he was responsible for the entire IBU-tec Group until 2023. Today, he heads the subsidiary IBUvolt battery materials GmbH, where he drives the expansion of the battery materials business. Having studied mechanical engineering, he began his career with OTIS elevator manufacturer in Paris and held management positions in quality control, design and production. Mr. Weitz then moved to Winkler + Dünnebier AG, where he held the position of plant manager leading a team of over 750 employees.
Dr. Rensch has been with IBU-tec since 1997. He leads the Sales & Technology department and coordinates order processing from quotation to realization, drawing on his many years of experience in the professional support and implementation of customer projects. Additionally, Dr. Rensch manages IBU-tec’s own products. He received his Ph.D. from Otto-von-Guericke University Magdeburg in the field of thermal soil decontamination in rotary kilns.
Supervisory Board
The supervisory board of IBU-tec meets several times a year to discuss the company's activities and management decisions.
Sandrine Cailleteau / Paris – Chairwoman of the Supervisory Board
Sandrine Cailleteau has been a member of the supervisory board since 2007 (chairwoman of the supervisory board since 2022). She holds a degree in Political Science and an MBA. After her MBA studies, she worked for several years as a Licensing Project Director for Sanofi and held a variety of positions at the leading edge pharmaceutical companies Fournier Pharma and Hesperion, as well as the investment banking firm, Michel Dyens & Co. In 2013, she founded SCiH Advisory and since December 2022 holds the position of Managing Director, European Healthcare at investment bank RBC Capital Markets.
Dr. Jens Thomas Thau / Berlin
Dr. Jens Thomas Thau is a lawyer, specializing in Employment Law. He has been a member (and vice-chairman) of the supervisory board since 2012 and acts as legal advisor to the company. Following his university studies in Berlin and New York, he worked as an academic researcher, a coach for legal examinations, and as a lawyer. In his current position, Dr. Thau is Chairman of the EBF Banking Committee for European Social Affairs, Co-Chair and Chief Legal Counsel of AGV Banken (The Employers’ Association of Private Banks). Dr. Thau is also a partner in his own legal firm.
Prof. Dr. Achim Kampker / Aachen
Prof. Dr. Kampker has been a member of the IBU-tec Supervisory Board since 2022. He holds a PhD in Mechanical Engineering from RWTH Aachen University and an Executive MBA for Technology Managers from the University of St. Gallen. Since 2014, he has been a professor at the chair for Production Engineering of E-Mobility Components (PEM) at RWTH Aachen University. In addtition to his scientific activities, he co-founded StreetScooter GmbH, which developed and produced innovative electric vehicles.
Isabelle Weitz / Paris
Isabelle Weitz has been a member of the Supervisory Board since 2023. She works at Omnicom PR Group, Paris, in communications consulting for international clients in the financial services, automotive and technology sectors. After studying European Studies and International Journalism in London, from which she graduated with a Master’s degree, she began her career in the communications department of the financial technology company Fractal Labs before joining the communications agency Fleishman Hillard, where she quickly assumed responsibility for various client projects.