Principal Engineer Communications Location: Barrow, Hybrid We offer a range of hybrid and flexible working arrangements please speak to your recruiter about the options for this particular role. Join BAE Systems and you ll be part of something bigger. As a valued member of our global colleague network, you ll bring your unique skills and perspectives to help pioneer progress and protect what matters most. In this role, you will lead the design and delivery of communications and audio systems for naval vessels, defining system requirements and engineering standards to develop effective solutions for complex submarine environments. You will produce technical documentation, develop testing protocols and support installation and commissioning activities. You will analyse test results, conduct technical studies to validate system performance, and collaborate with engineering and project teams on cost estimation, risk assessments and mitigation strategies, while supporting Factory Acceptance Testing to ensure equipment quality before installation. Lead the design and integration of communications and audio systems across submarine platforms, defining system requirements, architecture and engineering standards to deliver robust and effective technical solutions. Produce high-quality technical documentation including system specifications, engineering calculations, design reports and user documentation, demonstrating strong technical writing and documentation capability. Define and support system testing protocols, including installation, commissioning and dockside activities, ensuring systems meet required operational performance, safety and reliability standards. Conduct technical studies, verification and validation activities to confirm that system designs meet engineering specifications and operational needs. Contribute technical expertise to engineering and project teams, supporting cost estimation, technical risk assessments and mitigation strategies for complex communications solutions. Support Factory Acceptance Testing (FAT) of supplier equipment when required, ensuring system performance and quality prior to delivery and installation. Communications, Electrical, Telecommunications, Electronic or Audio Engineering) or equivalent experience, with proven system or equipment design experience and expertise in areas such as VoIP, PBX systems, acoustic modelling, radio or safety-critical communications systems; CEng and defence or marine standards knowledge desirable. The Submarine Communications Team: As a Principal Engineer Communications, you will collaborate with the internal communications design team to undertake a variety of design activities related to data networks, communication systems and associated equipment for submarine platforms. It also provides strong professional development prospects, enabling progression toward senior technical roles such as Consultant Engineer or into engineering leadership pathways. Relocation support may be available for submarine roles, subject to eligibility criteria. We re 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. You ll be recognised for your contribution and enjoy rewards tailored to what s most important to you and your family support for your financial and personal wellbeing, as well as a balanced lifestyle. LI-hybrid