S. Papakostas has been awarded his doctorate thesis in the domains of Population Genetics, Molecular Systematics, Evolutionary Genetics and Molecular Ecology in 2008 from the School of Biology of the Aristotle University of Thessaloniki (AUTH). Between 2009 and 2012, he worked as a post-doctoral researcher at the University of Turku (UTU) in Finland in the Proteomics, Functional Genomics, and the Molecular Ecology of salmonids. From 2012 we started his own group at UTU as Principal Investigator in the domains of Microbial and Molecular Ecology and of Eco-evolutionary Dynamics at UTU. Between 2012 and 2013 he also worked for 1 year at the Netherlands Institute of Ecology (NIOO-KNAW) in Wageningen, The Netherlands. From 2016 we worked as a Lecturer and Senior Researched at UTU and the University of Helsinki, Finland in the domains of Molecular Ecology and Population Genomics. In 2022, he returned as principal investigator at the Department of Biology of AUTH in the domains of Molecular Ecology and Population Genomics. Since July 2012, he is appointed as an Assistant Professor of Microbial and Molecular Ecology at the Department of Science and Technology of the International Hellenic University.