Our team

In early 2017, Klaus Wiesen, Dr. Thorsten Merten, Christoph Wiesen, Willem Bulthuis, and Dr. Markus Werner founded sustainabill to establish climate and human rights protection in global supply chains.

Research conducted by the Wuppertal Institute is the basis of the company’s idea, one of the world’s leading think tanks for applied sustainability research. Klaus Wiesen researched at the Wuppertal Institut and provided science-based consulting to companies until sustainabill was founded.

Today, we are a growing team of technology and sustainability experts. We are united by the firm belief that the transformation to a sustainable business world cannot succeed without sustainably designed supply chains. We want to be part of the solution to enable a sustainable business world and master one of the biggest challenges of the 21st century!


Klaus Wiesen
Co-Founder and CEO

Klaus takes care of business development, stakeholder communicati, and client projects. Before co-founding sustainabill, he was a team leader at the Wuppertal Institute, a leading sustainability think tank.

Christoph Wiesen
Co-Founder and CPO

Christoph is the Chief Product Owner and responsible for continuous platform development. He looks back on eight years of experience as an IT consultant in business intelligence and has a master's degree in computer science.

Dr. Thorsten Merten
Co-Founder and CTO

Thorsten makes sure that our IT infrastructure is in excellent shape and that we use the newest technology. He received his Ph.D. in software engineering and data mining at the University of Heidelberg and realized data-driven software projects.

Core Team

Ilja Lange
Sustainability Implementation Manager

Ilja helps our clients to implement the sustainabill platform and to increase transparency towards the upstream supply chain. He is a French-German national with a background in Chemistry and Natural Resource Management.

Miriam Gogel
Head of Business Development

Miriam is responsible for sustainable supply chain solutions within our cloud platform. Prior to joining sustainabill, she worked for PwC in sustainability consulting and auditing as well as business development.

Lena Witt
Sales Managerin

Lena is responsible for generating customer growth at sustainabill. Prior to joining the company, she did her bachelor's degree in International Business and worked for an advertising agency as a project manager.


Dr. Markus Werner

Markus is Co-Founder of the software company TriaGnoSys he led as 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.

Willem Bulthuis

As a member of the executive board, CTO and global sales director in high tech industry Willem gained great experience to act as consultant and business angel today. With sustainabill he follows his conviction that transparent supply chains are essential for successful business.

Our investors