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Job Title: Principal Systems Engineer Location: Portsmouth Naval Base – On site Salary: Up to £58,000 depending on skills and experience + 10% bonus 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. What you’ll be doing: In this position you will be applying Systems Thinking to understand the wider problem space, manage constraints and emergent behaviours, and balance key trade‑offs while shaping Architecture & Interfaces that define how systems work and interact. You will deliver strong Requirements Leadership and Management by capturing, decomposing and agreeing requirements, maintaining traceability and managing change. The role will champion Model‑Based Systems Engineering (MBSE) by modelling system behaviour, structure and interfaces, ensuring modelling standards are followed, and generating controlled outputs that support design, verification and validation. In addition, you will also apply Problem Decomposition & Complexity Management to break down multi‑domain challenges, visualise dependencies and maintain structured decision records throughout delivery. You will contribute to Lifecycle Delivery & Systems Integration by tailoring lifecycle processes, planning integration when required, and preparing for design and test reviews. Service Hub Collaboration will be a requirement, involving close engagement with Asset Management Service Hubs to tailor and deliver systems engineering capabilities and services. Through strong Technical Expertise & Leadership, you will lead reviews, manage risks and issues, ensure governance and safety expectations are met, and deliver work packages to cost, schedule and quality. You will also mentor and coach engineers, promote systems engineering best practices and exemplify BAE Systems behaviours and ways of working. Essential skills: • You’ll have strong experience of applying systems engineering across the lifecycle, including requirements management, architecture definition, integration, MBSE and V&V, • You’ll have experience of using high level design methodologies and architectures (e.g. UAF, NAF, TOGAF, SysML, UML) and practical capability in MBSE, using tools such as Enterprise Architect to model system behaviour, structure and interfaces. Additionally, you will have experience using requirements and interface management toolsets (e.g., DOORS), maintaining traceability and controlling system interfaces, • You’ll have knowledge of applying Systems Engineering standards and principles including ISO 15288, • You’ll have exposure to system integration and verification activities to ensure functional and performance needs are met This position sits within the Systems Engineering Hub, which is part of the Warship Technical Authority (WTA) Service Hub. The WTA aims to deliver Naval whole ship, systems and equipment engineering support and change management. The position will be part of a high performing Systems Engineering team, which works across the Maritime and Land Defence Solutions business unit. They will be required to lead and manage the delivery of on-going contracted workstreams and deliver tailored systems engineering services to the Asset Management Service Hubs, which comprises of warship Platform Management, Maintenance Management, Supply Chain, Data and Digital Services. The Principal Systems Engineer provides technical leadership, acts as a technical authority within their scope, engages with customers and suppliers, and mentors engineers to build capability across projects and teams. As a Principal Systems Engineer you will support the delivery of one or more of the core WTA service elements; Design Change Management, Platform Technical Assurance, Material State Management, Obsolescence Management, Specialist Engineering Support, Future Support and Transformation Planning. 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: 14th April 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-RB1 #LI-Onsite

Job Title: Senior/Principal Naval Architect Location: Barrow-in-Furness, Bristol, Portsmouth or Frimley We offer a range of hybrid and flexible working arrangements – please speak to your recruiter about the options for this particular role Salary: Competitive 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. What you’ll be doing: You will be conducting the analysis and evaluations of submarine platform manoeuvring performance from concept design to in service support, whilst undertaking the development, verification and validation of mathematical manoeuvring models using physical model test data. You will be working with enterprise partners to develop modelling capabilities, processes and toolsets, all whilst collaborating with Naval Architect teams and customers to deliver innovative and safe submarine solutions, while supporting and conducting hydrodynamic sea trials. Core duties: • You will have gained prior experience within the generation of ship or submarine manoeuvring modelling, • You will need to be able to demonstrate a strong understanding of hydrodynamic principles and methods As a Principal or Senior Naval Architect in the Vehicle Control team, you will work with experts across Naval Architecture and the Whole Boat Design Team on major, complex submarine design and build programmes, delivering advanced platforms for the Royal Navy and Royal Australian Navy. We offer relocation support packages across all Submarine 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: 15th April 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-CB1 #LI-hybrid

At Weetabix, we believe that diverse teams drive better ideas, stronger decisions, and a more inclusive workplace for everyone . We’re committed to building an organisation where people from all walks of life feel they belong—where different voices, experiences, and backgrounds are valued and respected. Interview process: Two Stage interview Process Working pattern: Hybrid working with 2-3 Days On-Site including Weetabix Wednesday, where everyone comes into the office for some great collaboration and meetings - it’s a must! While we operate a hybrid working pattern, we are committed to providing flexibility where needed. We’re happy to make reasonable adjustments throughout the recruitment process—just let us know how we can support you. In this exciting role, you'll be responsible for defining, designing, and implementing innovative technology solutions tailored to achieve specific business objectives. Collaborating closely with a diverse range of colleagues—including business stakeholders, developers, and systems administrators—you'll develop systems that are not only efficient but also highly effective, perfectly aligning with Weetabix’s strategic goals. • Collaborate with stakeholders to develop scalable, reliable, and secure application designs using appropriate technologies., • Design integrated solutions to automate processes for improved operational efficiency and data-driven decision-making., • Identify risks and bottlenecks in designs and propose mitigation strategies., • Create and maintain architectural documentation, including system diagrams and technical specifications., • Stay updated on industry trends and best practices, driving innovation and continuous improvement., • Communicate technical concepts effectively to non-technical stakeholders and collaborate across teams., • Ensure compliance with security and regulatory standards, participate in audits, and implement best practices., • Engage in architectural forums and strategically leverage core systems like PowerPlatform and Boomi for economy of scale., • Applications solution architect experience is essential (not infrastructure or network), • Domain experience in Supply Chain and preferably also Finance, • Some experience in creating architectural designs for business solutions including integrations and automation., • Knowledge of architectural principles, design patterns and software development methodologies., • Experience and technical knowledge of Boomi or similar integration systems., • Experience on Azure or other cloud-based platforms including AI services., • PowerPlatform / PowerApps / PowerAutomate experience., • IT Service experience (ideally ITIL exposure)., • The ability to create high-level and low-level technical designs to meet business requirements., • Understanding of development principles and lifecycles relating to business applications and data management systems, • Good understanding of businesses processes and ERP / supporting systems including WMS & APS (Advanced Planning System). Nice To Have: • FMCG/Retail/Manufacturing background., • Experience in AI solution design and deployment., • Intermediate SQL language experience; scripting / development language skills., • Experience or knowledge of Extract Transform Load (ETL) and/or Robotic Process Automation (RPA) tools. We offer a competitive salary and a comprehensive benefits package designed to support your wellbeing, career, and life outside work. • Annual bonus 10%, • Double-matched pension scheme (up to 12% from us), • 25 days annual leave increasing with service, • Annual Salary review, • Healthcare plan, • Continued investment in your personal development, • We believe in balance, whether it's for family, rest or simply time for you. As well as your holiday entitlement, you can purchase up to 5 days of additional annual leave, • Access to 24/7 counselling service (via Grocery Aid partnership), • The freedom of Flexible Work Opportunities, • Enhanced Maternity / Paternity / Adoption Leave, • Additional Time Off for Fertility Treatment and Neonatal Care, • Working Parents Support Group Please note: We benchmark roles based on your skills and experience, so we do not advertise fixed salary ranges. Unfortunately, we are unable to provide sponsorship for this position; therefore, we are seeking candidates who do not require sponsorship. We utilise our Preferred Agency Supplier Partners as and when we require additional support #HaveYouHadYourWeetabix Benefits Check out our website for more information: • Annual bonus, • Double matched ER contributed pension scheme, • Annual Salary review #HaveYouHadYourWeetabix

Systems Engineer - Satellite Communications Portsmouth, UK 6 Month Inital Contract The Opportunity: Shape the Future of Secure Space-Based NetworksAn exceptional opportunity has arisen for a talented Systems Engineer to join our Lead Systems Engineers and Architects team within Defence & Space industry in Portsmouth, UK. This is your chance to directly contribute to the next generation of critical military satellite communications capability, including key future-looking programmes like the UK MOD's Skynet Enduring Capability and other vital Milsatcom initiatives. Our client has a proven track record, having delivered Milsatcom capability to the UK MOD from Skynet 4, through the successful Skynet 5 PFI, and currently delivering Skynet 6A on orbit. They are setting the standard for inter-satellite links, navigation, and space-based networks. Join us to be at the forefront of these exciting, engaged, and future-focused technologies. As a Systems Engineer, you will be pivotal in defining the technical backbone for our major programme bids. Your primary focus will be providing the System Architecture Definition across all three segments: Space, Control, and Ground. Your key contributions will include: 1. System Architecture & Design Leadership Defining the comprehensive Ground System level architectural design, including leading technical trade-offs. Working closely with Engineering Leads and Partners to define segment and associated sub-system architectures via integrated Working Groups.2. Requirements Management Owning the end-to-end requirements lifecycle: capture and definition from high-level stakeholder needs down to sub-system specifications. Ensuring complete traceability and managing the Verification, Validation, and Test (VV&T) support activities.3. Proposal & Governance Providing expert technical inputs for major proposals and bids. Acting as the Solution Lead for customer and internal governance reviews, informing stakeholders on progress and problem resolution. Contributing to Systems Engineering and project management inputs for planning, schedule, and cost activities.What We Are Looking For Qualifications: A University degree or equivalent in Electronic Engineering, Computer Science, Telecommunications, or a closely related discipline.Essential Experience & Knowledge: Proven experience in the design, integration, and roll-out of end-to-end digital telecommunications systems. (Experience with Milsatcom systems is highly desirable). Demonstrable experience covering the space, control, and ground segments using established methodologies (Waterfall or Agile). Experience in defining solutions within an Architectural Framework utilizing Model-Based Systems Engineering (MBSE) and appropriate tools (Enterprise Architect is desirable). Experience in technical engagement with external customers and internal partners. A solid working understanding of the key portfolios, including satellite platforms and payloads, satellite control, mission control, and network control. Robust presentation and technical writing skills.This is a great opportunity to join a team directly working on the next wave of space technologies

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