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Our team

Vasileios Vrettos

CEO By Linear Aerospace Hellenic Air Force Lieutenant General (I) (r)

Air Force Lieutenant General (I) (r) Vasileios Vrettos is the Honorary Commander of the Hellenic Air Force Support Command. With a PhD in International and European Studies and experience as NATO Electronic Warfare Advisory Committee (NEWAC) Chairman and Deputy Governor of Hellenic Civil Aviation Authority, he combines strategic leadership with academic expertise. As an experienced instructor and F-4E fighter pilot, he currently leads By Linear Aerospace with an emphasis on innovation and operational excellence.

Chris Katsikeros

Product Development and Business Workflow Manager

A seasoned Aeronautical Engineer with over 35 years of experience in aircraft design and analysis. Throughout his career, he has contributed to a wide range of aerospace projects, demonstrating deep technical expertise and a consistent commitment to engineering excellence. His core competencies include aerodynamics, structural analysis, and Computational Fluid Dynamics (CFD). Backed by a strong academic foundation, he combines theoretical knowledge with extensive practical experience to deliver robust, efficient, and innovative engineering solutions.

Manos Koutsoybelias

R&D and System Software Development Manager

Manos holds a Ph.D. from the University of Thessaly and brings more than 15 years of specialized experience in the design and development of system software. His work focuses on embedded wireless sensor and actuator networks, as well as UAV-based systems, contributing to advanced, high-performance technological solutions. With a strong research background and extensive hands-on expertise, he has successfully delivered reliable and scalable architectures tailored to demanding operational environments, bridging academic innovation with real-world applications.

Konstantinos Lessis

Chief Financial Officer (CFO)

Mr. Konstantinos Lessis has an extensive and successful career in Finance, with over 25 years of professional experience in the private sector. He has held leadership positions across a wide range of business activities, gaining deep insight into the challenges and needs of diverse economic sectors. His academic background is multifaceted and internationally recognized, with studies completed both in Greece and abroad. He holds a Bachelor’s degree, two Master’s degrees, and two specialized Diplomas, underscoring his robust theoretical expertise and his continuous commitment to professional excellence. In his current role, Mr. Lessis is responsible for the strategic planning and implementation of the company’s financial roadmap. Through effective management of financial operations, he ensures sustainability, resource optimization, and the achievement of long-term business objectives.

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