(+30) 210 6812296

Asvestis Kostas

Founder and Managing Director of the Company since its foundation. He has worked as an Executive in various companies since 1994 and was responsible for Financial, Management,Organizational, Accounting and Tax issues.

He holds a degree from Athens University of Economics and Business (AUEB) in Business Administration with specialization in Accounting and Finance. He also holds a degree from the Technological Educational Institute of Kavala in Business Administration with specialization in Accounting. He also has a Master from the Hellenic Open University in Tourism Business Administration with specialization in Organization and Administration of Tourist Ports / Marinas.

He has participated in continuing vocational training seminars in business planning, techniques of cost reduction, cash flow planning and control, business valuation, accounting, taxation and business administration in general.

He has the following professional titles: 

Economic Profession with the ability to elect an auditor in Societe Anonymes and ability to sign, prepare, file relative studies and reports with businesses, organizations and bodies with financial activity in general with the aim to fall under developmental legislation and subsidies. 

Accountant – Tax Consultant Α’ degree with the ability to sign balances of any amount, to keep books and to sign tax returns of all categories.

International Financial Reporting Standards (I.F.R.S.): specialization professional title certified by the accredited European body The Association of International Accountants – A.I.A. of Great Britain with the ability to sign Balances prepared in accordance with International Financial Reporting Standards (IFRS).

Until today he offers his services as a Senior Executive Director regarding Economic, Accounting, Tax, Financial and Organizational issues to many businesses, Societes Anonymes, Limited Liability Companies, Unlimited Companies, Private Limited Co. Individual Companies.

Specialized in: Consulting services regarding business and private financial planning, financial services (CFO services, budgeting, cash flow management), services to the management (reporting, implementation of commercial legislation), accounting services, tax services.

He has strong experience - 20 years - in concession projects assigned by public bodies for the development, management and exploitation through self-financing DΒFΟ (Design - Built – Finance - Operate), with unique expertise and specialization in the field of the development and management of tourist ports / marinas and the land commercial facilities thereof.

During his career, he prepared Business Plans and Financial Models for the development and management of 20 marinas in four countries with a total capacity of 7,000 berth places, valuation reports for new investments on new marinas or exploitation of a current marina, feasibility studies of new and penetration to new markets, project finance, financial audit, and management reports.

He is Secretary General of the BoD of the Greek Marinas Association (GMA), since 2019-present, drafting and presentation of the GMA’s views and proposals to Ministries and public bodies, participation in law making/consultation process and law-making committees, representation before industry bodies regarding the development of marinas/tourist ports in Greece.

Sectors of activity


Giannopoulou Konstantina

She is a co-founder and partner of the company since its foundation and Responsible for Accounting management and Tax issues of the company’s clients. She has worked since 1998 as a Chief Executive responsible for Financial, Accounting and Tax issues. 
She holds a degree from the Hellenic Open University in Business Administration as well as a degree from Public Vocational Training Institute in Accounting and Taxation.

She has participated in continuing vocational training seminars in accounting, taxation, cash flow planning and business administration in general.

She has the following professional titles: 
Accountant-Tax Consultant B’ degree with the ability to keep books and sign tax returns of B’ category and turnover up to 1,500,000.00 Euro. 
Specialized in: accounting services, tax services, consulting services to businesses and employees and private tax and financial planning.

She has also strong experience since 2002 for businesses active in the construction sector providing services for the organization and monitoring of their financial operation (cash flow management) and accounting representation.

Professional experience in detail:


ATHENA S.A.  (AVAX GROUP) 2008-2011
Financial and accounting management in various Group companies.

Financial and accounting management in various Group companies.


METROPOLIS S.A. 2005-2006
Financial and accounting management of the company and its branches.


32, Kifisias Ave. | Atrina Tower, 151 25  Marousi • Athens
Τ: (+30) 210 6812296 • email: e.a@etairikiaxia.gr