Mr. Karanassios joined ATHEX in 1997, after an 8-year career at the Computer Technology Institute (CTI), an Academic R&D Institution. 

He has served at ATHEXGROUP from various senior management positions, covering a wide range of IT, business operations and development projects. 

He has over 33 years working experience, of which 18 years in operations and business development of trading & post trading services in Capital Market Infrastructures, and 15 years as a Senior IT Systems Architect/Manager, Business Analyst, Project Manager and Operations Manager of large-scale IT Infrastructures in both public and private sector. 

He holds a diploma of Computer Engineering & Informatics from the Polytechnic School of University of Patras and certificates from training programs and conferences, in IT, Operations & Development of Capital Market Infrastructures and Leadership.