We are one of the leading engineering companies in Northern Hesse with partners from various sectors throughout Germany and Europe and a broad variety of engineering services. Founded in 1995 by managing directors Dr. Dietmar Freitag and Dr. Frank Mannewitz, casim has become a successful, growing company with more than 90 experienced employees.

Over the years, our engineering excellence has been growing continuously – in line with the demands and expectations of our customers.  The decisive factors for our success are the same as they have always been – specialized expert knowledge and our insistence on staying close to our customers.

We are a strategic partner in development, planning and quality promotion. In the areas of mechanical and automotive engineering we provide our customers with development-related services in form of calculations, simulations and consultations. Our goal is to meet the specific requirements of our customers holistically and to develop the most efficient solution. That’s why we offer innovative, efficient and future-oriented services.

Absolute customer focus and best service quality are the Alpha and Omega and the only way to achieve maximum customer satisfaction. That’s why the continuous updating of our engineering know-how and our IT-tools is a matter of course for us.

The art of engineering is based on teamwork, so casim makes a point of working closely with the customer and treating him as a partner. The same applies within the company too, there is cross-disciplinary cooperation between our experts from all the various departments in the interests of our common objectives.

To support other engineers and developers, we have also informative seminars and training opportunities. Furthermore, we offer the calculation software simTOL® for tolerance calculations and simQS® for machine capability studies. Both software tool are developed by casim.

Always giving our best is a matter of course for us. That’s why our daily work is characterized by highest quality standards and innovative ideas.


Our team of over 90 highly qualified employees of diverse disciplines offers high-performance solutions every day. Here you can get to know our engineering experts.

Dietmar Arndt

Head of Marketing & Sales

Dr. Dietmar Freitag

Managing Director

Heiko Hofmeier

Project Leader Software Development

Ulrich Imann

Head of Design

Thomas Männer

Location Manager Ingolstadt

Dr. Frank Mannewitz

Managing Director

Martin Sauer

IT Manager

Johannes Schweinsberg

Head of FEA Calculation

Mirco Simunovic

Head of Quality Promotion

Franz Stadler

Location Manager & Project Leader Tolerancing Graz

Petra Töpke

Head of Administration & QM Commissioner

Lars Wagner

Project Leader Tolerancing Kassel


Our goal is to offer the best customer service. That’s why we are represented at three locations from which we can act throughout Germany and Europe.


casim GmbH & Co. KG
Heinrich-Hertz-Straße 3b
34123 Kassel

Phone: +49 (0) 561 87997-0
Fax: +49 (0) 561 87997-250
E-Mail: mailks@casim.de

Dr.-Ing. Dietmar Freitag
Dr.-Ing. Frank Mannewitz


casim GmbH & Co. KG
Ruppertswies 32
85092 Kösching

Phone: +49 (0) 8456 27806-0
Fax: +49 (0) 8456 27806-99
E-Mail: mailin@casim.de

Location Management:
Dipl.-BW. Thomas Männer


casim GmbH & Co. KG
Kurzeggerweg 11d
8044 Graz

Phone: +43 (0) 664 2448147
E-Mail: mailgr@casim.de

Location Management:
Dipl.-Ing. Franz Stadler


For many years we have been working together with lots of well-known customers. Here you can get an overview of our reference customers.

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