Isaak Tselepis holds a PhD in Electrical and Computer Engineering, from the Democritus University of Thrace, and works as the Lead Full Stack Developer at Verlabs company. In parallel he is active as an IT Freelancer providing System and Network Design, Setup, Administration and Maintenance, Web-based Applications / Websites, Software Development and Systems and Network Security. He has long experience as a teacher for students of Hellenic Open University on Information Technology, and as a tutor in a private learning institution on Mathematics, Physics and Software development.