We are seeking a Senior Systems Integration Engineer to join a leading engineering company based in North London. This role involves working across the design, integration, and testing of complex systems, collaborating with multidisciplinary engineering teams. Key Responsibilities Support systems design, integration, and test activities. Contribute across the full product lifecycle from concept through to delivery. Work with software, mechanical, and electrical engineering teams. Produce technical documentation, specifications, and reports. Support system verification and validation activities. Requirements Degree in Engineering, Physics, Mathematics, or equivalent experience. Experience in systems integration, design, or testing. Understanding of systems and product lifecycle development. Strong communication and technical documentation skills. UK driving licence and eligibility for UK Security Clearance. Experience with radar, RF, or electronic systems. Knowledge of communication protocols Experience with test equipment (oscilloscopes, spectrum analysers, multimeters). Background in defence, aerospace, or complex engineering environments.