Managing Directors

Cornelius Fischer, Managing Director Finance/Controlling

Cornelius Fischer holds a degree in business administration and started his professional career as a management consultant with a focus on cost reduction programs.

He has been with the DB Group since 2006 and has held positions in Infrastructure, Human Resources Management, Corporate Development and Technology. In his last function, he managed the cross-divisional processes of the Digitalization and Technology Ressort.

He has been Managing Director Finance/Controlling at DB Systel GmbH since April 1, 2025.

Ann Miller-Rauch, Managing Director Human Resources

Ann has constantly found herself between two worlds: an American born to a German mother and Portuguese American father. Unknown then, this lifelong balancing act of dual identities would eventually lead to a career in the international IT industry built on bridging different cultures.  Ann has a master’s degree in anthropology and an MBA. After business school, she joined Fraunhofer Institute IAO.

During her 15 years at Software AG, she held roles in marketing and human resources where she progressed to an executive role. As Vice President People Communications and Strategy Enablement at SAP, she focused on ensuring SAP’s people strategy and HR initiatives were consumable, memorable and innovative.  Here she created the HR Punks initiative which today is a continued movement across the HR Community. 

When she changed to the Nemetschek Group SE in 2021, she took over as Head of Global HR.

Ann Miller-Rauch has been Managing Director Human Resources at DB Systel GmbH since August 1, 2024.

Edmund Buchbinder, Managing Director Operations

Edmund Buchbinder holds a degree in psychology and a Master of Science in computer science. He began his professional career as a consultant for software ergonomics in Professor Dr. Prümper's Office for Work and Organizational Psychology in Berlin.

He joined DB Systel in 1998 and has worked for the company in various roles and functions since then. He has also been the IT emergency manager for the DB Group and DB Systel since 2020.

Edmund Buchbinder has been Chief Operations Officer at DB Systel GmbH since April 1, 2025.