Stelios is a member of the Institute of Chartered Accountants in England and Wales (ICAEW), the Association of Chartered Certified Accountants (ACCA) and the Institute of Certified Public Accountants of Cyprus (ICPAC).

Formerly a senior manager within the financial services practice of KPMG in London, he specialised in the insurance sector, providing audit, tax and advisory services to a wide range of leading life and non-life insurance companies and Lloyd's syndicates.

He has extensive experience of UK statutory and FSA regulatory reporting for insurance companies as well as US IPO, US GAAP and Sarbanes-Oxley exposure.

Since moving to Cyprus, he has been involved in statutory reporting and international tax planning for International Business Entities.