Since 1998 he has been working at the ILSP, as head of the Quality Assurance Office (1999-2003), in 2004-2007 he has elected Researcher at ILSP, in 2008-2015 he has promoted to Senior Researcher and in 2015-today he has promoted to Researcher Director. He has been elected as President of the Scientific Council of ILSP for the period 2009-2018, as member of the Board of Athena RC since 2016-2019 as an elected representative of the Researchers and Vice-President since 2019. He was among the founding members of LibrisTech, the first spin-off company of ILSP, where he acted as managing director until September 2004 and until 2010 he was President of the Board. He is also Member of the Board at the Information Society S.A since June 2019. His research interests involve digital signal processing, statistics analysis, machine learning and artificial intelligence with applications in a wide variety of signals and data (voice, music, image, video, sensorial data, etc.) He has authored a significant number of scientific publications in the above fields in books, scientific journals as well as international conferences. He has supervised doctor thesis and postgraduate thesis as well as teaches in postgraduate programs in his research subjects. He has also participated in the organization international conferences such as ΙCFHR 2014, he has participated in international competitions in handwriting processing technologies (ICDAR & ICFHR Contests), music technology (MIREX) and sensor data analysis (PHM Data Challenge) with among the best submissions and his is also reviewer in scientific journals and international conferences. He has coordinated the quality control of various commercial products and software systems, he has been involved in research and development programs at national and European level, having the role of the coordinator, the scientific manager or a member of scientific teams. He is member at the IEEE (Institute of Electrical and Electronic Engineers) since 1992, of the Technical Chamber of Greece since 1992. Since 1999 he is a certified market maker/trader of the Derivatives Market at the Athens Exchange and of the ACM (Association for Computing Machinery) since 2005.