Dionis Teshler served in the Israeli Air Force as System Security Architect for advanced F15 and F16 avionics. Later on, he became Chief Information Security Officer (CISO), responsible for the design and implementation of cybersecurity solutions for missile defense systems, such as Iron Dome and Arrow 3. Following that, he served as Project Manager for IT systems and CISO for the Israeli F-35 fighter jet program. After his military career, he worked as VP R&D of audience measurement startup Trumedia. He holds a B.Sc. in electronics engineering and computer science (cum laude) from Tel Aviv University, an M.Sc. in computer science (thesis in computational neuroscience, cum laude) and a Global MBA with a focus on global strategy from the Interdisciplinary Center of Herzliya.