Vissarion graduated from Cardiff University in 2006 with a MEng(Hons) degree in Civil Engineering. Soon after his graduation he became a member of «KONIDARIS-DAGLAS econstruction». As a senior engineer, he has been responsible for the supervision of site works. Since 2008 his main focus has been on sustainable housing with attendance in numerous seminars and conferences regarding sustainable design and construction. He holds a “Diploma in Environmental Management (ISO14001)” from the Hellenic Management Association (2009) and he is a Certified Building Energy Auditor (Pres. Decree 100/2010 GR).