Management Team
Athanasios (Tom) Stratos

Athanasios (Tom) Stratos is the CEO of Cosmote e-Value in Greece (from 2009) and e-Value International in Romania. His visionary attitude, steadfast commitment to excellence and his perspective of having the customer at the heart of every decision, have led to the remarkable growth of the company under his leadership. He serves also as Executive Director, Customer Services of OTE Group - a pivotal member in leading the organization strategies through change, transformation, turnaround and growth. He joined the Group in 1998 and since then has occupied several senior managerial positions. Mr. Stratos has extensive experience in commercial, Sales and Service in the telecoms sector and Business Process Outsourcing, having worked in large companies in Greece and Canada. Mr. Stratos holds a degree in Business Administration from Ryerson University in Toronto, Canada.

Amvrosios Kardaris

Amvrosios Kardaris is the General Director of Cosmote e-Value, since 2005. Under his leadership, Cosmote e-Value was established as one of the biggest contact centers of Greece, always investing in advanced technology and aiming to create value for customers.

Before joining Cosmote e-Value, Mr Kardaris worked mainly at the telecommunications sector, at Germanos as Fixed, Mobile Telephony & Internet Shops Service Director (2000-2005), prior to that, at the Customer Care Department of Cosmote (1997-2000) and at the Financial Department of Panavox (subsidiary of Panafon, later Vodafone).

Mr Kardaris holds a B.A. in Economics, from Deree College (American College of Greece).

Tania Pantazi

Tania Pantazi is Commercial & International Business Development Director of Cosmote e-Value and has been in the company's management since 2004 when she took over the Commercial Division. She has contributed significantly to the growth of the company and to Cosmote e-Value’s Commercial Department.

She has more than 15 years of experience in sales and customer service, as she also worked for Lamprakis Press Group, before joining Cosmote e-Value. Mrs Pantazi holds a B.A. in Marketing & Management, from Deree College (American College of Greece).

Efi Alerta

As Cosmote e-Value Head of IT and Technology, Efi Alerta is responsible for all aspects of strategic IT planning. Ms Alerta, within her role, is also responsible for the management and delivery of projects across the company.

Prior to joining Cosmote e-Value in December 1999, Efi served as Information Technology Manager at a Multinational Company member of Athens Stock Market. In this role, Efi led a specialized team that provided production and project support for networks, telecommunications, and applications. Supported vastly different infrastructure and application environments. Project manager for CRM solution for organization spanning multiple locations Network management.

Dimitris Gotzaridis

Dimitris Gotzaridis serves as Head of Operations. He joined Cosmote e-Value as Operations Manager in 2009. Between 2015 and 2017, had also the position of Head of Operations in e-Value International Romania playing a vital role in the setup of the Operations in 5 different sites in Romania. Prior to Cosmote e-Value, had more than 20 years of experience in sales, service, and marketing to business and consumer customers at all levels working for companies like MRM (McCann Ericsson Group), Amstrad, JVC servicing customers like Cosmote, Vodafone, Wind. Pepsico etc.

He has an MBA with specialization in Sales Management and a BA with specialization in Marketing from Athens University of Business and Economics and Erasmus University of Rotterdam and he is completing his postgraduate studies in Management Information Systems with specialization in Business Data Analysis.

Irini Kakogianni

Irini Kakogianni is Cosmote e-Value Human Resources Manager since August 1, 2012. Since 2006 she held various positions in the Human Resources Division of OTE GROUP. From 2006 until 2009 she worked for the HR Training Department and from 2009 to 2012 as an HR Account Manager for Commercial Activities. She has an extensive experience in Telecoms and specifically in Call Centers due to previous working experience (1999-2006) in Wind Hellas Mobile Telecommunications where she held several positions in Commercial Division (Call Center, Sales/Retail Training). She holds a Bachelor’s degree in Political Science & International Studies from Panteion University Athens.

Mari Mantaka

Mari Mantaka is Cosmote e-Value Corporate Communication Manager since October 3, 2016, while she joined the OTE Group in 2001. She held several positions in Internal Communication and Public Relations (2004-2016), and prior to that she worked at the Olympics Games Department Athens 2004 and also at the Treasury Department of Cosmote.

She holds a Bachelor’s degree in Political Science & International Studies from Panteion University Athens, as well as an M.Sc. in Management Studies (major in Marketing Management) from Brunel University, London. She also has an accreditation in Project Management (PRINCE2) and apart from her native language Greek, she speaks fluent English, French and Italian.

Eugenia Sfyri

Ms Sfyri is Finance and Budget Controlling Manager at Cosmote e-Value Greece. She joined the OTE group in Oct 2011. Prior to joining Cosmote e-Value, Ms Sfyri worked in the financial field of Mobil Oil Hellas SA (1992-1997), in Interasco-Insurance Co as Deputy of Finance Director (1998-1999) and over the years 1999-2011, she was Financial Controller in Leo Burnett Athens. Ms Sfyri holds a Bachelor’s Degree (BS) from the National & Kapodestrian University of Athens – Faculty of Economics and she is an active member of Greek Economic Chamber.

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