Christian has extensive professional experience as sustainability lecturer and keynote speaker for (corporate) sustainability. Among others, he worked as Chief Sustainability Architect at SAP and led the task for Sustainable economic activity and growth within German Chancellor Merkel’s future dialogue.

His book Sustainable Action. Overcoming the Barriers was accepted as the new report to the Club of Rome. Therein he gives a comprehensive account of barriers  to sustainability and suggests action principles for sustainability which support actors in contributing to the realization of the SDGs. He holds degrees in physics, philosophy, theology and engineering.