Overview: We’re looking for an experienced Systems Engineer to join a high-performing team supporting defence programmes. This role offers the chance to work on complex, mission-critical systems in a hybrid working environment. You will apply Model-Based Systems Engineering (MBSE) principles to drive requirements, architecture, and design activities across the full system lifecycle. Key Responsibilities: Lead and contribute to system architecture design, requirements analysis, and verification/validation activities Apply MBSE techniques using industry-standard tools (e.g., SysML, Cameo, Rhapsody, Enterprise Architect) Develop and maintain system models to support design decisions and stakeholder communications Collaborate with cross-functional teams including hardware, software, integration, and test teams Ensure traceability between requirements, design, and test artefacts Support the development of technical documentation and design reviews Engage with customers and stakeholders to understand and refine requirements Essential Requirements: Minimum 6 years' experience in systems engineering within the defence sector Strong working knowledge of MBSE methodologies and tools (e.g., SysML, Cameo) Proven experience across the systems engineering lifecycle (concept through to delivery) Good understanding of requirements management and systems architecture Excellent communication and stakeholder engagement skills Active SC clearance (Security Check) is mandatory Desirable: Experience with DOORS or similar requirements management tools Exposure to complex systems such as missiles, radar, communications, or aerospace platforms Chartered or working toward Chartership with a relevant engineering institution