Life Sciences Consulting
Dennis Theis - Team
Dennis Theis
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Management & Board of Directors


Our senior management is the top management level and the decision-making body of ARCONDIS. Led by CEO Dennis Theis, the management team sets goals, is responsible for the operational day-to-day business and never lets one thing out of their sight: the vision to help our customers achieve intelligent success through our passion and expertise. Learn more about each person:


Dennis Theis Management


Dennis Theis, CEO

Dennis Theis is CEO of ARCONDIS AG and of ARCONDIS Group.

The industrial engineer with a master’s degree in Business Administration has twenty years of experience in consulting and life sciences. For ten years, Dennis Theis acted as Managing Director of Accenture Switzerland’s Basel location.

He supports in digital business transformation projects, implementing global systems and special topics such as advanced analytics and artificial intelligence. For developing ARCONDIS, he will concentrate on innovation, globalization and specific quality and industry-relevant topics, such as compliance. His aspiration for himself and ARCONDIS is to inspire: Delivering something new in excellent quality and to give customers the certainty that we are one team working on one goal.


Peter Bunse Management


Peter Bunse, Managing Director ARCONDIS Deutschland

Peter Bunse is responsible for the management of ARCONDIS in Germany.

He can look back on 20 years of experience in the development and management of service units, which are specialized in the consultation of companies in the life science industry. He studied at the Technical University of Darmstadt and, following his first professional experience as a consultant, joined Hoechst in 1990, which was the world’s largest drug manufacturer at the time. Peter Bunse has extensive knowledge in the introduction of software applications in the fields of research and development, regulatory approval and drug manufacturing. He is known as a competent partner among all renowned companies in the life science industry in Germany.


Mark Dangel Management


Mark Dangel, Senior Manager

Mark Dangel joined ARCONDIS in May 2011. As Senior Manager Clients he is responsible for key account management. Previously, he worked for both Accenture and Roche and has over 10 years of experience in the consulting and pharmaceutical industries.

In addition to the acquisition of new clients and his account management responsibilites, Mark Dangel continues to actively support customers with his exerpience in project management, digital transformation and trend topics such as blockchain and AI. He consults and manages various projects regarding the introduction of digital workplaces and innovative business models.


Rob Stijlen Management


Rob Stijlen, Senior Manager

Rob Stijlen has been with ARCONDIS since 2014. In his role as as Senior Manager Clients he is responsible for all sales activities in individual key accounts. This includes the support and development of existing key accounts.

In addition to a master’s degree in electrical engineering from the Technical University in Delft, Netherlands, Rob also holds a bachelor degree in Business Administration from the GSBA in Zurich. He has more than 30 years of experience in various sales and management activities in various markets including the life science industry. During his long-standing career in the Swiss software and consulting industry.

Sandra Weniger-Niederberger Management


Sandra Nicole Weniger-Niederberger, Senior Manager

Sandra Nicole Weniger-Niederberger, graduate business data processing specialist, has been working for ARCONDIS since October 2005 and can look back on over 10 years of experience in the pharmaceutical and medical device industry. The manager places her special focus on the interpretation and implementation of regulatory requirements in the field of Compliance. In addition, the experienced project manager is an expert in trends and is valued by customers and employees as a trainer and workshop consultant in the subject areas of quality management and computer system validation.

In her internal role as a quality manager, Sandra Nicole Weniger-Niederberger advances the continuous improvement of ARCONDIS.

Boris Zorn Management


Boris Zorn, Senior Manager

Boris Zorn, the senior manager of the Life Science Information Management department, has been with ARCONDIS since 2010. He has more than 15 years of experience in the healthcare, pharmaceutical and medical device industry.

As a project manager, business analyst and process manager, he works on many global IT projects. He specializes in stakeholder management and helps companies introduce new business processes and organizational and cultural changes with his long-standing experience in organizational change management.

In his internal role as a head of department, Boris Zorn is in charge of staff development, customer account support and the continuous innovation of the company’s services and fields of specialization.


Board of Directors

Many years of experience in managing companies, 100% commitment to their work and the perfect supplement to their areas of specialization: this is what characterizes the members of our supervisory board. The committee is led by the man who founded ARCONDIS more than 18 years ago: Christian Baumgartner.

Christian Baumgartner

Christian Baumgartner

Präsident des Verwaltungsrats, Gründer der ARCONDIS

Clemens Guetermann

Clemens Gütermann

HR & Organization

Michael Loechle

Michael Loechle

Market and Law

Stephan Schindler

Stephan Schindler


Martin Schneider

Martin Schneider

Sales and Marketing