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C. Kalentis

Mr. Kalentis is the Founder and Principal Consultant of Zephirus Business Consultants, operating in Athens, Greece, and Brussels, Belgium. With over 25 years of experience as a senior executive, he consults medium to large organizations on Critical Infrastructures and ICT strategies, developing customized solutions in collaboration with leading manufacturers and building client communities that foster brand loyalty.

He has implemented critical secured network infrastructures for various entities, including Governmental Organizations, Central Monetary Authorities, Greek Financial Institutions, Telecom Providers, and Maritime Companies.

He previously served as a member of the International Relations, Foreign Policy, and Defense working group at the Konstantinos Karamanlis Democracy Institute.


Mr. Kalentis holds an undergraduate degree from Baker and has completed postgraduate studies at the University of York, UK, and the Harvard Kennedy School of Government. He has traveled extensively, providing presentations, lectures, and contributing to over 200 publications and interviews in well-known newspapers and magazines.