Job Title\: Principal Engineer - Software Engineering (Assurance) Location: Barrow-In-Furness, Filton, Frimley, Broad Oak, Brough or Weymouth. Hybrid - 2 days a week on site. We offer a range of hybrid and flexible working arrangements - please speak to your recruiter about the options for this particular role Salary: C ompetitive Who we are: 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. You’ll 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, there’s no limit to where a career at BAE Systems could take you. Job Description: As a Principal Engineer within the Software Assurance team, you will plan and conduct software assurance activities, including the review of plans and processes, witnessing of testing, and carrying out inspections and audits. Core duties: Work with our customer to agree an acceptable approach to risk Review software plans, documentation and software aspects of system-level plans and documents to provide timely and meaningful feedback Engaging with System Designers, Software Developers and other engineering disciplines in the design process to ensure that software meets requirements Document the level of risk, provide evidence and reporting for Senior Management Work with a range of stakeholders at all levels to resolve non-conformances and programme risks Essential Skills: Familiarity with various software types, including programmable electronics, is beneficial, though in-depth expertise in all areas is not required. A strong grasp of software lifecycle principles and their application across different software types is essential Understanding of the systems engineering lifecycle and its relationship to software development Logical thinking and problem-solving skills, with the ability to find practical solutions and align stakeholders with the resolution Experience in Software Assurance methods and processes, including audit and review The Software Assurance team: This is a growing role within our business and industry with significant potential for development and further growth. We expect the candidate to quickly develop an understanding of the development, use and control of software in our complex and unique application. Being actively involved in the decision making and problem resolution for some of the most critical aspects of our design. This opportunity offers a uniquely broad view of the SSNA programme, business and customer organisations which offers significant development both technically and personally. We offer relocation support packages across all Submarines roles, subject to meeting eligibility criteria. Why BAE Systems? Here you’ll 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. 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. 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: 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. 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\: 6th May 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-GV1 LI-Hybrid