We're looking for an experienced Senior Systems Engineer to join our team near Northampton, where you'll play a key role in delivering high-performance, mission-critical RF systems. This is a hands-on, high-impact position with opportunities to influence the full product lifecycle—from defining system requirements and architecture to performance analysis, integration, and verification. You’ll collaborate closely with multidisciplinary teams, bringing a systems-thinking mindset and technical leadership to complex engineering challenges. Key Requirements * Minimum 5 years’ experience in a similar role (7+ years preferred) * Proven expertise in systems engineering across the full development lifecycle * Hands-on experience in system architecture, requirements capture, and verification * Ability to lead and contribute to technical delivery and produce high-quality documentation * Degree in engineering or equivalent professional experience * Must be a British citizen and/or eligible for UK Security Clearance (SC)