Serafeim A. Triantafyllou has worked as a Computer Science Teacher in schools of Secondary Education of Greek Ministry of Education and Religious Affairs. He holds a BSc in Applied Informatics, an MSc degree in Continuing Education and a Master Degree of Education in Special Education. He taught in School of Pedagogical and Technological Education (ASPETE), Annex of Thessaloniki (Greece) for the academic years 2017-2018 and 2018-2019. Serafeim is also author of computer science and pedagogy books.