Systems Engineer – Requirements Lead (Defence) - UAV

Senior Systems Engineer – Requirements Lead (Defence) Location: Bristol (Abbey Wood) – Hybrid Working Contract: Inside IR35 Duration: 1 December 2026 – 31 March 2027 with possible extensions Security Clearance: Current SC Clearance Essential About the Role Infinity Systems Engineering is seeking an experienced Senior Systems Engineer / Requirements Lead to support an exciting MOD Defence capability development programme.

The successful candidate will lead requirements engineering activities, supporting the development and demonstration of next-generation Defence systems, including UAV-mounted capabilities. Working alongside MOD, DSTL and industry partners, you will play a key role in requirements definition, technical assessments, engineering governance and verification and validation activities.

Key Responsibilities Develop, manage and maintain system-level requirements across complex Defence programmes. Translate operational needs into clear, measurable technical requirements and acceptance criteria. Establish requirements traceability and verification methodologies.

Support technical evaluation of industry proposals and engineering solutions. Conduct technical assessments and contribute to design reviews and technical governance. Develop verification and validation (V&V) strategies and supporting documentation.

Support test and trial planning, including technical assessment of results. Engage with MOD stakeholders, suppliers and multidisciplinary engineering teams. Essential Skills & Experience Proven Systems Engineering experience within Defence.

Strong background in requirements capture, analysis, management and traceability . Experience developing technical requirements and acceptance criteria. Knowledge of systems engineering lifecycle processes and V&V. Experience supporting technical reviews and engineering governance.

Ability to assess complex technical information and provide practical engineering recommendations. Strong stakeholder management and communication skills. Current SC Clearance is mandatory. Desirable Experience Experience within Ordnance, Munitions and Explosives (OME) or Defence weapons systems.

Knowledge of ISO/IEC/IEEE 15288 and systems engineering methodologies. Experience using requirements management tools such as DOORS. Exposure to Defence trials, experimentation or demonstration programmes. Knowledge of UAV platform...

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