Margus Metshein received his B.S. and M.S. degrees in electronics and bionics, as well as his Ph.D. degree in information and communication technology, from the Tallinn University of Technology (TalTech), Tallinn, Estonia, in 2006, 2010, and 2018. Between 2016 and 2018, he worked as an Early-Stage Researcher with the Thomas Johann Seebeck Department of Electronics at TalTech. During 2018-2019, he worked as a Mud Products Development Laboratory Expert and Specialist with Tallinn University, Haapsalu College. From 2019 onwards, he has worked as a Research Fellow with the Thomas Johann Seebeck Department of Electronics at TalTech. During February to May 2023, he worked as a Guest Research Fellow with the Institute of Electronics and Computer Science (EDI), Latvia. He authored thirty-five research papers, two book chapters, and five inventions. He has participated in several national and international projects as a senior staff member and principal investigator, focusing on the acquisition of human body-related parameters, the development of respective technologies, and signal/data analysis for clinical and methodology-targeted applications. His expertise encompasses the acquisition, processing, and analysis of physiological signals (cardiorespiratory activity, body composition, tissue/organ condition). Keywords: biomedical sensors and technologies, development for human-related applications, and methodology and signal processing/marker development.