Marios Hartsiotis was born in Nicosia and is a graduate from the Law School of the University of Athens. He registered with the Cyprus Bar Association in 1988 following his internship at the office of the Attorney General.
In 1990 he established his own office and today he is the senior partner and director of the MARIOS HARTSIOTIS & CO LLC legal company which employs a substantial number of lawyers and deals with the entire spectrum of legal science.
He has acquired a significant experience in various sectors such as commercial and corporate law, insurance law, contract law, administration of estate etc.
As of 2016 he is a licensed Insolvency Practitioner.
Mr. Hartsiotis also participates in various organizations, institutions and associations which expand their activities in the wider professional, social and charitable sector. He is a member and registered Arbitrator of the Cyprus Arbitration and Mediation Centre.