Born in Graz and working in Vienna. 40 years of research and development and teaching, 12 years of professional experience at Siemens AG, experience in own companies, project management and consulting for building technology. CTO of IBE Solution GMBH. 25 years of experience and specialisation in renewable energy, sustainability and vertical farming. Modular construction and transformation of buildings. Electrical Engineer, Master in Energy Self-Sufficiency Engineering and Management, CO2 Manager, EMBA Green and digital Transition (2024).