Over 25 years of practical, hands-on experience

The Company

dwsquare is an owner-managed interdisciplinary project and development service provider. Our customers value us as trusted partners in the complete sequence of product development.

We initiate your ideas with our own brand of innovation methodology and our engineering develops (creates) your product from A-Z (from start to finish). To achieve the utmost production and quality standards, we tailor all concepts and processes to your unique requirements. An encompassing know-how in the field of manufacturing and production facilities completes our development and counselling range.

Our references are successfully completed projects for large (global) and midsized companies.



The dwsquare PartG mbB was founded in 2014 by Dietmar Weitzel and Dirk Wenzel. Here 30+ years of hands-on business knowledge, respectively, in the fields of engineering and production as well as quality and production were united.

Ever since then dwsquare thrives as a successful, interdisciplinary company.

Since 2017 we contribute to the development of the “Transport Systems” research area and are thereby part of the prestigious State of Hesse LOEWE funding programme

Since 2020 we are contributing to the development of a Technology Condition Monitoring Software as part of the Digital Strategy and Development funding program of Hesse called distr@l.


Our Customers

As we are an interdisciplinary project and development service provider our customers stem from vastly different industries. The company sizes range from small medium-sized firms to global enterprises. Depending on the size of the project, up to four of our people work together as a team. The project durations can vary from several days up to a couple of years.

Our customers hail from the five largest global pharmaceutical enterprises, the major corporations of the food industry, and the suppliers of Germany’s biggest automobile group.


Our Team

Katja Pfeiffer

Katja Pfeiffer

Office Management


Expertise: Office Organisation, Accounting, Purchasing

Languages:  German, English, Italian

Dr. Emöke Cserti

Dr. Emöke Cserti

Quality and project management


Competencies: Project management, planning and support of validations and qualifications in the pharmaceutical industry.

Creation and review of GMP-compliant documents as well as coordination and documentation of production-relevant analyzes (e.g. deviations, error investigations, CAPAs).

Molecular biological expertise and many years of experience in experimental laboratory work.

Languages:  German, English, Hungarian

Dietmar Weitzel

Dietmar Weitzel

Managing Director


Expertise: 30+ years in cGMP and Quality Management as well as Commissioning and Qualification within pharmaceutical industry.

Strong leadership and performance driven attitude. Analysis and support of senior management during generation/creation and optimisation of a quality strategy including its implementation/realisation/execution.

Creation/execution of in- and out-sourcing projects. Leading of quality teams for preparation of inspections and audits in the FDA and EMEA regulated environment.

Preparation and Execution of inspections and audits

Training and support for local and international inspections and audits (FDA and EMEA). Performance of self-inspection, mock-audits, and PAI.

Languages: German, English, Italian

Dirk Wenzel

Dirk Wenzel

Managing Director


Expertise: Analysis and optimization of production and packaging processes with focus on the food industry. Robot handling systems and interlinkage/chain-linking/concatenation in the manufacturing industry.

Support of the aspired change process and optimization measures at the side of specialists and managers as well as process and shop floor teams.

Plant and facilities planning, lean production, planning of process flows and procedures, generation of KPIs.

Longtime business knowledge in the fields of construction, development, planning, production, assembly, and operation scheduling as well as redevelopment and prototype development.

Energy management, efficiency and energy counseling.

Preparation of concepts and analyses.

Languages: German, English, Italian

Jan Wenzel

Jan Wenzel

Development/Design Engineer and Project Manager


Expertise: Product development methodology and construction of diverse CAD systems.

Analytical and numerical calculation (FEM) of mechanical systems in mechanical and plant engineering.

Projection in machine and plant engineering.

Measurement and experimental techniques as well as planning and setup of test stands.

Languages: German, English, Italian, French

Kristian Siegemund

Kristian Siegemund

Development/Design Engineer and Project Manager

Expertise: Projection and planning of energy concepts, identification and calculation of energy-saving potentials, data collection and data analysis regarding energy efficiency improvement.

Projection and implementation of monitoring, evaluation, and analysis software for energy flux in accordance with DIN ISO 50001.

Counseling, distribution, and implementation of maintenance and service software.

Economic inspection of technical solutions, project management, process optimization, facility planning and projection, mechanic and thermic process engineering.

Languages: German, English


dwsquare GmbH

Dietmar Weitzel u. Dirk Wenzel
Limited liability company


Head Office
Zur Burg 3
D-35102 Lohra - Willershausen
Phone: +49 6462 91 68 312