C4ISR / Land SystemsLocation: Tubize, BelgiumLanguages: French and/or Dutch, with fluency in English requiredAbout the Role:An international defense technology leader is seeking a System Architect Engineer to join its Land Systems division in Belgium. This position focuses on delivering advanced C4ISR (Command, Control, Communications, Computers, Intelligence, Surveillance & Reconnaissance) solutions tailored for the national defense sector in the BELUX region.You will play a key architectural and technical leadership role, acting as the main technical interface with military customers, and ensuring their operational requirements are accurately captured and reflected across projects, system designs, and solution roadmaps.Key Responsibilities:Analyze and understand customer operational concepts and deployment structures (ORBAT).Lead the definition and design of system architecture in line with customer needs and strategic roadmaps.Act as the primary technical point of contact for customers across multiple projects and bids.Drive the technical roadmap for land-based C4ISR and C2 (Command & Control) solutions.Bring forward expertise in tactical communication networks, vehicular mission systems, and BMS (Battle Management Systems).Lead the system specification process, ensuring clear translation from business needs to technical requirements.Evaluate and support the selection of subsystems and subcontractors where required.Contribute to technical documentation: system designs, user manuals, test plans, and configuration specs.Maintain a strong awareness of evolving defense communication technologies, including radios, IT infrastructure, and secure networks.Candidate Profile:Degree in Electronics, Telecommunications, or a related engineering field.Minimum 5 years of experience in the development or deployment of defense C4ISR systems.Solid understanding of vehicular mission systems, C2/BMS software, and radio/IP communication networks.Familiarity with system engineering lifecycle and IVVQ processes (Integration, Verification, Validation, Qualification).Knowledge of cybersecurity solutions is a strong asset.Strong interpersonal and communication skills; able to interface with technical and non-technical stakeholders.Fluent in French and/or Dutch, with English proficiency.