Dr Stefanakis is Assistant Professor at the School of Chemical and Environmental Engineering, Technical University of Crete, Greece. He is Editor-in-Chief of the journal ‘Circular Economy and Sustainability’, and of the Springer Book Series with the same title, as also Associate Editor in other journals. He is European Climate Pact Ambassador appointed by the European Commission. He is an Environmental Engineer and Researcher focusing on water engineering, specifically on nature-based solutions and ecological engineering. He also studies the content and realization of circular economy across different sectors. He has designed, managed, and built several constructed wetlands facilities for wastewater management around the world. In the past, he worked as Researcher and Lecturer at the University of Brighton (UK), the University of Beira Interior (Portugal), the Helmholtz Center for Environmental Research – UFZ (Germany), and the Democritus University of Thrace (Greece). He has also beenemployed by a Greek and a German multinational company as professional engineer.His publication record includes 42 articles in scientific journals, more than 50 papers in scientific conferences, 4 books and several book chapters.