Senior Systems Engineer - Mission-Critical RF Systems £60,000 - £65,000 Benefits | Northamptonshire | Hybrid Working About the Role Join a leading technology company developing cutting-edge, mission-critical RF systems for defense and security applications. We're seeking a Senior Systems Engineer to play a key role in delivering high-end systems across three core capability areas: * Secure Tactical Datalinks for critical communications * Spectrum Monitoring Systems for RF analysis and management * Battlespace Technologies including COMINT, HF Direction Finding, C-UAS, and C-RCIED systems This is a technically hands-on yet strategically involved position working across the full product lifecycle from bids to delivery. Key Responsibilities Systems Architecture & Strategy: * Systems architecture definition and high-level design * Requirements capture, analysis, and management * Translate customer requirements into technical solutions * Interface definition and system performance analysis Technical Leadership: * Lead and guide multidisciplinary engineering teams * Maintain technical vision across complex projects * Support bid processes and customer technical discussions * Cross-functional collaboration and stakeholder management Product Development: * Work across full development lifecycle * System verification and validation activities * Technical documentation and specification development * Design reviews and technical risk management Essential Requirements * 5 years systems engineering experience (7 preferred) * Strong background in systems architecture and requirements capture * Experience with full development lifecycle management * Ability to translate high-level requirements into system architecture * Technical leadership of multidisciplinary teams * Some knowledge of RF systems essential * British citizenship or eligible for UK security clearance (SC) * Engineering degree or equivalent experience What We Offer * Salary: £60,000 - £65,000 * Annual Bonus: 3-6% of salary * Hybrid Working: 3 days onsite in Northamptonshire * Holiday: 25 days option to buy 5 additional days * Pension: 5% company contribution (when matched) * Benefits: Life cover, comprehensive package * Hours: 40-hour working week