Job Title: Principal Engineer (External Communications Integration) Location: Barrow-in-Furness, Onsite We offer a range of hybrid and flexible working arrangements please speak to your recruiter about the options for this particular role Salary: Negotiable dependant on experience Who we are: Join BAE Systems and youll be part of something bigger. As a valued member of our global colleague network, youll bring your unique skills and perspectives to help pioneer progress and protect what matters most. Youll be trusted to play your part in delivering the advanced, technology-led defence, aerospace and security solutions of tomorrow, shaping a safer future, for all of us. From the depths of the ocean, to the far reaches of space, theres no limit to where a career at BAE Systems could take you. What youll be doing: Youll mature the external communications sub-system on the submarine from build to test. Youll undertake test and trial events on the submarine. Youll be working with subcontractors to come to site to undertake test events. (You will be responsible for managing the visit submitting security forms, health and safety briefs, on the boat etc.). Youll conduct defect investigation or non-conformities. (installation or testing) and investigate to a resolution. Youll provide specialist knowledge and subject matter expertise to develop the functional design of external communications systems. Youll be able to define the systems architecture, components, interfaces and data to enable the development and production of the component sub systems. Youll understand the contractual and performance requirements for external communications systems, and support the definition and associated acceptance criteria and events through design, build, integration, installation and commissioning activities. Core duties: Youll bring experience in Field Engineering/Construction Engineering, within a test and commissioning background, including taking part in test and trial events Youll be a domain specialist within communications systems Youll have relevant experience in fault finding role Youll demonstrate Electrical / electronic experience The Build Integration (Astute) External Communications Team: This team oversee installation and test of the Combat System on the build boats. This role is specifically External Communication working with the operations department to install kit, bringing subcontractors in and other specialists to undertake installation or test activity throughout the lifecycle of the build up to exit. You will have the opportunity to operate the kit and work closely with ship staff on the boat, this will help them through a range of training and handover of the system once the kit has been matured. We offer relocation support packages across all Submarines roles, subject to meeting eligibility criteria. Why BAE Systems? Here youll build a career with purpose and limitless possibilities. With lifelong learning and meaningful work, this is a place where you can grow your career with confidence and be empowered to be your best. Youll be recognised for your contribution and enjoy rewards tailored to whats most important to you and your family, support for your financial and personal wellbeing, as well as a balanced lifestyle. In an environment embracing sustainable ways of working and with a strong sense of shared purpose, our supportive culture is a place you can feel you belong and proud of the difference you make. A place where everyone can thrive: Were committed to building an inclusive workplace where everyone feels valued and supported. We know that a diversity of backgrounds, perspectives and experiences strengthens our teams and is vital to the work we do. Please be aware that many roles at BAE Systems are subject to both security and export control restrictions. These restrictions mean that factors such as your nationality, any nationalities you may have previously held, and your place of birth can restrict the roles you are eligible to perform within the organisation. All applicants must as a minimum achieve Baseline Personnel Security Standard. Many roles also require higher levels of National Security Vetting where applicants must typically have 5 to 10 years of continuous residency in the UK depending on the vetting level required for the role, to allow for meaningful security vetting checks. Closing Date: 26th March 2026 We reserve the right to close this vacancy early if we receive sufficient applications for the role. Therefore, if you are interested, please submit your application as early as possible. LI-AG1 LI-Onsite