Ioannis Tzitzios is an Electronic Engineer (MSc) currently serving as a PhD candidate and Research Associate at the International Hellenic University (IHU) within the Department of Supply Chain Management, and he is also affiliated with the research team at the Democritus University of Thrace (DUTH). His research interests lie at the intersection of next-generation Internet of Things (IoT), Edge Computing, and Hierarchical Edge Computing architectures, alongside the optimization of machine learning models for smart systems. He has actively contributed as a key researcher to prominent framework projects, including HARMONISE and FLEdge.