The Centre for Sustainability and Excellence is a leading global advisory organization and think tank with offices in Chicago, Athens, Brussels and Cyprus that provides sustainable development solutions to thousands of international corporations, institutions, and governments. Through its network of international partners, CSE offers formal training, education, and certification on Corporate social responsibility (CSR), sustainability, and excellence globally. CSE is a Global Reporting Initiative (GRI) organizational stakeholder since 2007, and is fully certified by the Institute of Environmental Management and Assessment (IEMA).

Dr. Koos has proudly become an IEMA certified sustainability practiioner CSR-P.