Job Description What will you be doing? Are you ready to contribute to the development of next-generation mission computing systems supporting some of the UK’s most advanced defence platforms? We're seeking a talented Systems Engineer to play a key role in a high-profile aerospace and defence programme, focused on delivering secure, real-time avionics and embedded computing solutions. This is a hands-on opportunity to work across the full engineering lifecycle, from initial requirements and systems architecture through to integration, test, and deployment — enabling critical capabilities for complex airborne and land-based systems. Location : Hastings (Hybrid) Your main responsibilities will be: Lead systems engineering activities across the entire V-model lifecycle, including requirements capture, system architecture, design, integration, verification, and validation. Manage system and sub-system requirements using IBM DOORS, ensuring full traceability and compliance with customer expectations and design intent. Engage in requirements decomposition and traceability, collaborating closely with design, software, and hardware teams to align system functions with high-level needs. Define and manage system interfaces, support functional behaviour modelling, and participate in architectural trade-off decisions. Contribute to system integration and verification activities, supporting lab-based testing, platform integration, and final acceptance procedures. Participate in technical design reviews, hazard analyses, and assurance reviews to ensure robust and reliable engineering solutions. Work with multi-disciplinary teams, acting as a key technical interface between engineering teams and stakeholders. Engage in through-life support activities such as issue resolution, system upgrades, and configuration management. Who are we looking for? You are Passionate about engineering result-oriented proactive