Management

Jan-Gregor Dahlem, Dr.-Ing.

Managing Director, Sole shareholder
Responsible for all national and international business operations, the branches and subsidiaries

„We bear particular responsibility for acting in an environmentally sound manner. This is so because in the future, buildings will be measured, more than ever, according to their ecological, economic and social sustainability.“

Hans-W. Dahlem, Bauassessor Dr.-Ing.

„Even in my father's time, the quality of our work depended on the cooperation of all parties involved in a spirit of partnership.“

Mathias Kleffmann, Dipl.-Ing.

Managing Director Essen
Jointly responsible for all national business operations

„Today, more than ever, the real challenge in planning and implementing demanding projects is to put together a team that understands the task as a common goal.“

Helmfried Dietsch, Dr.-Ing.

Head of international Projects
Responsible for all international business operations

„We are active worldwide, with a focus on Eastern Europe and the Middle East. I see my work as groundbreaking support in the implementation of construction projects in the infrastructure sector, in partnership with our international clients."

Fabio Chui Pressinotti, Dr.-Ing.

Branch Manager Rhein-Main (Wiesbaden, Darmstadt) 
Responsible for all national business operations

„The shared values and regional ties of the Wiesbaden and Darmstadt offices provide us with an excellent, long-term basis for carrying out environmentally compatible and sustainable projects in the steadily growing Rhine-Main economic region.“

Jörg Müller, Economist

Managing Director Essen
Responsible for the finance, human resources, corporate and organizational development department

„In order to act as a sustainable, future-oriented employer, and to stay competitive in the long term, qualified and motivated employees are our most important asset. Finding them, training them to meet our own requirements and retaining them over a long period of time is a major challenge.“

Tankred Börner, Dr.-Ing.

Deputy Branch Manager Rhine-Main (Darmstadt)
Jointly responsible for all business operations of the branch 

„Our goal is to provide holistic advice to customers in order to implement sustainable and innovative projects. Environmental and resource-saving aspects create an essential foundation in this respect.“

Robert Lohrsträter, Dipl.-Ing.

Branch Manager Berlin
Responsible for all business operations of the branch

„For me, Berlin is an exciting metropolis. It is growing steadily and should become climate-neutral by 2050 at the latest. With our mix of tradition and innovation, we want to drive and help shape the way to this goal - together with our Berlin partners.“

Martin Schmidt-Bregas, Dipl.-Ing.

Deputy Branch Manager Rhein-Main (Wiesbaden)

Jointly responsible for all business operations of the branch

„Our goal is to provide holistic advice to customers in order to implement sustainable and innovative projects. Environmental and resource-saving aspects create an essential foundation in this respect.“