Maciej Sac received his M.Sc. degree in Telecommunications from Gdańsk University of Technology, Gdańsk, Poland in 2009. In 2022 he received his Ph.D degree in Information and Communication Technology. His research interests include IP QoS, VoIP, IMS/NGN, SDN networks as well as multimedia services and teletraffic engineering. Currently, he is employed as an assistant professor at Gdańsk University of Technology, Faculty of Electronics, Telecommunications and Informatics, Department of Teleinformation Networks, where he gives classes related to his research areas. So far he has published more than 40 research works. He has also actively participated in several research and development projects/grants conducted in Department of Teleinformation Networks.