Conference 2026
Panel: Military Computing Meets Industry: The Dual-Use Imperative
Marc-Julian Siewert has joined secunet Security Networks AG in July 2025 in the capacity of Chief Executive Officer (CEO) and Chairman of the Management Board. He brings with him many years of international experience in various areas of the high-security industry.
Marc-Julian completed his studies of business and management in the UK, Canada, USA and Spain. Following his Master’s degree, he worked in technology consulting for two years, before joining Papierfabrik Louisenthal GmbH in 2013 as Vice President Key Accounts.
From 2015, he held various roles in Sales & Marketing in the Currency Technology division of Giesecke + Devrient GmbH, where he spent many years abroad. He was appointed Group Vice President and Head of Value Added Solutions and Services at the same company in fall 2018. Before joining secunet, he was a member of the management board of Veridos GmbH for six years, including more than three years as CEO.