PortfolioSuccess Stories
Infrastructure Technologies
Olaf Hoffmann, CEO of Dorsch Gruppe

“We are shaping the sustainable infrastructure of tomorrow in order to meet global needs.”

Olaf Hoffmann, CEO of Dorsch Group
Olaf Hoffmann
Dorsch Gruppe is a respected and innovative consulting and engineering partner. Through the combination of local presence and international backing from the entire group, we have been able to significantly expand our strong position in Germany as well as internationally.

In order to continue this growth not only organically but also through acquisitions of complementary planning companies, in 2016 we decided to bring a financially strong and experienced partner into the company as the majority shareholder. RSBG has held 100 percent of the shares in Dorsch Gruppe since 2018. Despite all the differences that we have learned to deal with in markets such as francophone West Africa, the Arabian Peninsula, India and Southeast Asia, there is one thing they all have in common: the sharply increasing need for planning and construction resources. In order to be able to keep pace with the globalized world, each country's infrastructure needs to be highly developed at theregional level.

Climate and environmental protection are playing an increasingly important role here. We believe our task is to make our projects as sustainable as possible. In doing so, we pay attention to the quality of our services and thus actively contribute to a better environment.

About the entrepreneur
Olaf Hoffmann can look back on a long career in the construction industry. He successfully completed a degree in architecture and urban planning. During this time, several stays abroad enabled him to expand his intercultural skills and knowledge of international operations. After completing his studies, he decided early on to set up his own planning office. From the beginning, his work has been characterized by international projects and commissions.

In 2005, Olaf Hoffmann had the opportunity to take over Dorsch Consult with his partner at the time, Jürgen Röder. Since September 2005 he has been the CEO of Dorsch Gruppe.

As CEO, Olaf Hoffmann understands how to constantly adapt to dynamic competitive conditions and how to advance the group with his innovative ideas. Under the leadership of Olaf Hoffmann, Dorsch Gruppe has achieved enormous growth in recent years—nationally and internationally.
Dorsch Gruppe
Facts & figures

Employees: ≈ 7.200
Subsidiaries: 21
Projects per year: 2.500+
Years of experience: 70
Number of countries around the world in which it is active: 50+

bringing visions to life. Dorsch Gruppe

Dorsch was founded in Wiesbaden in 1951. Since then, Dorsch Gruppe has developed into one of the largest independent planning and consulting groups through the acquisition of complementary planning companies. Now with a total of 16 subsidiaries, Dorsch Gruppe is active worldwide and places the topics of sustainability and quality at the centre of its activities.

water power station

For more than 70 years, Dorsch Gruppe has been a respected and innovative consulting and engineering partner for industrial customers, private investors and public institutions. As a group of companies with around 3,400 employees, we are one of the largest independent planning and consulting groups in Germany. We are represented internationally by several branches and a large number of project offices in more than 50 countries.

Our focus here is primarily on the fields of transport infrastructure, water & environment, innovative planning, architecture & urban planning, and energy & industry. We always work in a quality-conscious and future-oriented way —for people all over the world.


Acquisition of Dorsch Consult (EGIS S.A.) by Hoffmann Röder Ing. Ges.
Establishment of Dorsch Gruppe for the strategic bundling of shareholdings
DC Airports and Hoffmann Röder Hochbau GmbH renamed as Dorsch International Consultants GmbH
Acquisition by RSBG SE
GRE German Rail Engineering GmbH and spiekermann ingenieure gmbh become part of Dorsch Gruppe
AMBERO Consulting Gesellschaft mbH becomes part of Dorsch Gruppe
AHT Group GmbH becomes part of Dorsch Gruppe
Dorsch obtains a majority holding in KREBS+KIEFER and forms a strategic partnership with it
BPS rail and IRS Stahlwasserbau become part of Dorsch Gruppe
BLS Energieplan becomes part of Dorsch Gruppe
AlfaTech Consulting Engineers and RSBG UK become part of Dorsch Gruppe
ECG (Engineering Consultants Group) becomes part of Dorsch Gruppe
[Translate to English:]
Success Story
[Translate to English:]
Jörg Kilb, Philipp Unterhalt, Frank Konrad, Diego van Muylem
Executive Board of HAHN Group
The customers of the HAHN Group companies benefit from a wide range of automation solutions, starting with very small projects for individual grippers or robot arms, through the expansion of existing systems with flexible additions and extending to standardized modules and test and inspection systems. The HAHN Group supports its customers worldwide with the planning, implementation and commissioning of complex production lines. Moreover, it continuously accompanies them as they create advanced smart factories.
Martin Wynaendts van Resandt, CEO of LAB14
Success Story
Logo LAB14
Martin Wynaendts van Resandt
CEO of LAB14 Group
The LAB14 Group invests primarily in companies whose products and services are fundamental to advanced micro- and nanofabrication technologies. Our vision is to combine individual know-how and long-standing customer relationships in order to develop tailor-made modular solutions and services.
Luca Borella, CEO Masco Group
Success Story
Logo Masco Group
Luca Borella
CEO of Masco Group
The Masco Group is a group of companies in the global life sciences market specializing in engineering, consulting and technology. Our core competencies are the design, development, manufacture and integrated project delivery of prefabricated, modular and customized high-purity process systems.
Peter Nöthen, CEO Qvest Group
Success Story
Logo Qvest Group
Peter Nöthen
CEO and Founder of Qvest Group
Qvest is the reliable trailblazer and companion for dealing with challenges related to digital transformation. In addition to excellent teamwork, this primarily requires a partner who enables the long-term development of the company. We found this partner in RSBG SE, and since then we have been able to significantly promote the organic and inorganic expansion of Qvest, both geographically and in terms of our range of services.
Thomas Hähn, CEO United Robotics Group GmbH
Success Story
Logo United Robotics Group
Thomas Hähn
CEO of United Robotics Group and founder of HAHN Group
The United Robotics Group bundles hardware and software expertise under one roof and, together with partners and customers, develops tailor-made service robotics solutions for challenges in the fields of medicine, care, hospitality and education. In addition, with “Robot as a Service” the group offers a flexible subscription model for the automation of operational production.
Success Story
RSBG Ventures
As a subsidiary of RSBG SE and therefore part of the RAG-Stiftung, RSBG Ventures is positioned where tradition meets the future. Having grown from our roots in coal mining, we are expanding our involvement beyond our traditional portfolio of medium-sized companies and focusing on promoting and growing start-ups. The start-ups in question provide innovative solutions in future-oriented sectors.
RSBG Value Investments
Value Investments is the growth partner for future markets. A forward-looking market environment, innovative business models, established core brands and a high level of implementation expertise characterize the DNA of Value Investments and its portfolio of companies.