BAE Systems – Principal Systems Engineer (Architecture) Location: Barrow-in-Furness or Filton Contract: 12 months Rate: £58 PAYE or £78.33 Umbrella Please note that you will have to go through full SC Clearance. This role focuses on systems architecture development within a highly complex and safety-critical engineering programme. Key responsibilities include: Developing and maintaining system architectures across large-scale, integrated defence platforms Defining and decomposing system functions into coherent architectural models and design structures Ensuring alignment between system architecture, requirements, and downstream design implementation Supporting trade studies and design decisions to optimise system performance, safety, and capability Working closely with multidisciplinary engineering teams to ensure architectural consistency across subsystems Contributing to technical governance, design reviews, and assurance activities at system level Ensuring compliance with applicable standards and engineering best practice within a regulated environment Ideal experience includes: Strong systems architecture experience in complex engineering environments (defence, marine, aerospace, etc.) Familiarity with model-based systems engineering approaches and architectural frameworks Ability to communicate complex technical structures clearly to both engineering and non-engineering stakeholders