Theodoros is a full member of the Institute of Certified Public Accounts of Cyprus (ICPAC), and the Association of Chartered Certified Accountants (ACCA) of UK.

In 1996 Theodoros joined MGI Gregoriou as an Accountant dealing with the bookkeeping, VAT and Tax compliance obligations of local and international clients.

In 1999 he joined Horwath DSP Ltd as an audit manager where he was managing the audit team responsible for the financial statements audits of local and international clients.

In 2010 Theodoros joined Executive Business Consultants Ltd as a partner leading the Client Accounting Department of the firm.

Theodoros is a member of the board of Directors of the company and specializes on VAT and Tax compliance matters.