Dr.-Ing. Tanja Kojić is a researcher at the Quality and Usability Lab, TU Berlin. She received her PhD in Engineering (Dr.-Ing.) from TU Berlin, where her work focused on immersive media technologies and user-centered evaluation methods. Her research expertise lies in Extended Reality (XR), including Virtual and Augmented Reality, with particular emphasis on usability, user experience (UX), and Quality of Experience (QoE). She has co-authored the QUALINET White Paper on Definitions of Immersive Media Experience and published widely on interactivity, presence, and social acceptability in XR environments. Beyond academic research, Dr. Kojić is actively engaged in international standardization activities at ITU, contributing to the development of recommendations on immersive media and gaming. She has collaborated in multiple national and EU-funded projects (e.g., DIDYMOS, ART) and regularly teaches courses on usability engineering, immersive technologies, and human-computer interaction. Her work bridges technological innovation with human factors to advance accessible and engaging immersive media experiences.