Who we are
Science, technology and practice, around one table.
Refinery is a collaboration of four people and four organisations. Each brings one of the things a good consultant combines: validated management science, technology that makes knowledge usable, international practice in culture and decision-making, and the connection to clients.
The people


Berry Tanis
Co-founder and CEO, n6i
Connects management science, technology and commerce. n6i develops Cortex, the knowledge platform and agent framework behind Refinery’s analyses.


Duca Simons
Founder, DS Solutions
Initiator of Refinery. Brings clients, partners and the team together, and coordinates the international route.


Dr. Cari Leyshon
CEO, CQify
Doctorate in Business Administration, specialised in organisational culture. Works on action learning, culture and decision-making; co-author of Culture Based Performance.


Marcel van Marrewijk
Chair of the Executive Board, SDO University of Applied Sciences
Dean of Modern Business Administration at SDO. Author of the Cubrix framework and the Handboek Organisatieontwikkeling, and of widely cited work on corporate sustainability.
The organisations behind Refinery
Where we work
- Rotterdam
- Kralendijk
- Madrid
- Bern

Technology: the Cortex knowledge platform and agent framework

Science: Modern Business Administration (SDO University of Applied Sciences)

Culture and decision-making, international network

Clients, partners and coordination
Start with one question.
Tell us which decision is on your table. We'll tell you, in one conversation, whether Refinery can evidence it.