Our Team

We are a fast growing, interdisciplinary team. Passionate about sustainability, we strive to find technological solutions for the implementation and management of sustainable supply chains.


The Founding Team


Klaus Wiesen

CEO, Business Development

Klaus was a researcher and project coordinator at the sustainability think tank Wuppertal Institute and realized numerous projects for companies and public clients. With sustainabill he wants to achieve sustainability assessments as a basis for every management decision.


Christoph Wiesen

CPO, Data Analytics

Christoph looks back on more than eight years of experience as an IT consultant in the field of business intelligence. He has specific knowledge in the area of data processing and data evaluation. At sustainabill, he uses smart analytics to turn data into insights.


Dr. Thorsten Merten

CTO, Software Engineering

Thorsten received his Ph.D. in software engineering and data mining from the University of Heidelberg. He further realized data-driven software projects at the Bonn-Rhein-Sieg University and the Fraunhofer Institute IAIS. For sustainabill he brings along his passion and experience for clean software code.


Willem Bulthuis


Willem was a Member of the Executive Board, CTO and global Sales Director in the high-tech industry. Today he is a consultant and business angel. With sustainabill he follows his conviction that transparent supply chains are essential for successful business.


Dr. Markus Werner


Markus is Co-Founder of the software company TriaGnoSys, which he led as a Managing Director until 2016. He coordinated the EU research project myEcoCost. He brings with him the vision of a largely automated and dynamic-adaptive sustainability assessment.