About Adryan Consultants

Adryan Consultants is an internationally operating services group. From our offices in both Dordrecht, The Netherlands, and Visp, Switzerland, we offer a full range of services for the (Bio-) Pharmaceutical, High-End Food and Oil, Gas & Chemicals industry, including Asset Management, Integrated Commissioning & Validation, Interim/Project Management and Process Development.


The needs and requirements of our clients are the main concern of Adryan Consultants. Our success lies in working with highly trained experts with extensive experience in their field of operation. Our corporate goal is client satisfaction.

The strength of Adryan Consultants is the efficient interaction between our highly skilled and motivated consultants, who can rely on a solid management team. As a team our experts are constantly keeping their skills and expertise up-to-date.

Company Structure
Sales Management

Seth Hagemann
CEO | Director

Aad van den Berg
CTO | Consultant

André Huijzer
Business Manager

Sabine Schoonbrood
Business Manager


Management Advisory Board

Adryan Consultants values its clients and consultants greatly. Regular contact with the daily practice of our clients and own consultants is essential for the strategy of our organization. Therefore management is being advised on a regular basis by the Management Advisory Board with regard to developments, trends and challenges in the market. They also advise from their own experience about improving our consultants and organization.

The current Management Advisory Board members are:

Richard Laroes
Senior Project Manager

Peter Schrijver
Senior QA/GxP Consultant


André Boerman
Operational Manager

Trudy van der Mussele-den Hollander
Office Manager

Priscilla Stok-Hansen
Office Assistant


Jeffrey Trapman
Office Assistant