Evangelia S. Papadopoulou is an Assistant Professor of Environmental Microbiology in the Department of Environmental Sciences, University of Thessaly, and a member of the Laboratory of Environmental Microbiology and Virology. She holds a BSc in Agriculture, an MSc in Plant Protection, and a PhD in Pesticide Science–Soil Microbiology from the Aristotle University of Thessaloniki. She carried out her postdoctoral research at the Laboratory of Plant and Environmental Biotechnology, at the Department of Biochemistry and Biotechnology, University of Thessaly, with which she maintains an active research collaboration. Her research focuses on the impact of agrochemicals, including pesticides and nitrification inhibitors, on soil microorganisms, with particular emphasis on their effects on microbial activity, community structure, and ecosystem functions related to soil nitrogen cycling. A central component of her work is the study of the ecology and functioning of ammonia-oxidizing microorganisms and their responses to synthetic and biological nitrification inhibitors, addressing cellular mechanisms of action, environmental persistence, spectrum of microbial activity, and non-target effects across laboratory and soil-based systems. Through her work, she supports the evaluation of biologically based approaches to regulate soil nitrification and mitigate reactive nitrogen losses and greenhouse gas emissions. Her research activities also extend to the environmental fate and microbial ecotoxicology of agrochemicals, as well as their microbial biodegradation in soil, providing an integrated understanding of chemical–microbial interactions in agroecosystems. She has served as Principal Investigator of the project NITRIC (ELIDEK–GSRI-HFRI, 2018–2021) and as Deputy PI or team coordinator in several national and European research projects focusing on nitrification inhibitors, including FRIDA (ELIDEK–GSRI-HFRI), ACTIONr (Horizon 2020–2027), projects funded by the Grantham Foundation, as well as three consecutive projects funded by Syngenta Crop Protection AG. Overall, she has participated in more than 15 publicly and privately funded research projects, contributing actively to all stages of project design, implementation, and management. She is the author of 29 peer-reviewed publications (h-index: 19; >900 citations, Scopus).