Constantinos Demetriou graduated from the University of Manchester in the year 2002 where he successfully obtained his degree in BA (Econ) with a specialization in accounting and finance. He then obtained the ACA qualification by the end of the year 2006 while he was working in the audit department of one of the Big 4 audit firms in Cyprus. Before joining Consulco he was a tax manager in the tax department of another Big 4 firm in Cyprus where he worked for the last two years advising multinationals operating in and through Cyprus.