Senior expert for water, environment and sustainable development with extensive experience in environmental and water policy advice and management in the Middle East and Africa. Initially trained as a hydrogeologist, geophysicist and geoscientist, with more than 20 years of professional experience in university research, teaching, private consultancies, public institutions, advisory services for UN agencies and German federal ministries, worked as groundwater specialist and adviser for water and land resources management in Africa, Europe and the Middle East.