Salary: £55,000 - 80,000 per year Requirements: BEng/BSc and/or masters degree in an appropriate engineering, computer science, information systems or related subject Knowledge of Sensor and Communication systems Experience in Systems Engineering and technical leadership across functional teams from R&D concept through to full product development lifecycle Knowledge of Position, Navigation and Timing (PNT) Familiarity with Electronic Warfare (EW) including EA, ES, ECM, ESM, RF cyber, middleware and radio bearers Understanding of defence frameworks and standards such as PNT OS, MOSA, ASPN Systems understanding of hardware, firmware and software including DSPs, FPGAs, software defined radios, RF systems and antennas Familiarity with development processes like Waterfall, Agile, SAFe, and Spiral Ability to identify and analyze key risks, issues, and problems and manage them through technical RAIDOs Responsibilities: Gain understanding of existing system products and future development agendas in domains such as GNSS, eLoran, and alternative navigation Act as a System Design Authority on specific projects across the full engineering lifecycle from initial R&D concept to product and support Provide leadership and systems engineering expertise to technical teams in delivering research, solutions, product development, equipment trials, and business development Strengthen customer relationships and develop business opportunities through expert technical assistance Provide technical assurance expertise across a broad range of internal projects and on behalf of clients Liaise regularly with project management teams and customers for progress reviews, ensuring technical delivery to time, cost, and performance/quality Work dynamically on customer sites, from the office, in shared workspaces, or from home as needed, with occasional overseas travel Conduct rapid prototyping for Urgent Operational Requirements (UOR) Technologies: Firmware Hardware Support Security System Engineer More: We are a leading defence and national security consultancy located in Southampton, seeking Senior Systems Engineers to provide technical leadership in delivering innovative solutions in Position, Navigation and Timing (PNT), RF communication, and sensor technologies. Alongside a competitive salary of £55,000 to £80,000, we offer flexible benefits including health and wellbeing, savings and protection, and life, leisure, and entertainment. Our team values effective communication and collaboration with defence clients and stakeholders, fostering a dynamic and technically challenging work environment. Due to the nature of our work, candidates must be willing and eligible to achieve a minimum of SC clearance. last updated 5 week of 2026