Giannos is a Civil Engineer. He is the Director of the Federation of Cyprus Construction Contractors Associations, a Member of the General Council of the Cyprus Scientific and Technical Chamber and a Member of the Board of Directors of the Cyprus Association of Civil Engineers. He graduated from the Democritus University of Thrace and then completed his master's degree in Project Management at the University of Naples. As a design consultant he has worked in design offices and collaborated with construction authorities, in the preparation of static studies, project supervision and contract management.