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Job Title: Principal Structural Engineer Location: Barrow-in-Furness – we offer a range of hybrid and flexible working arrangements – please speak to your recruiter about the options for this particular role Salary: Competitive What you’ll be doing: • Analysis and Design of complex steel structures utilising Eurocodes, British Standards and BAE standards, to support submarine build, • You will utilise your knowledge of specific regulations & requirements beyond that used within BAE Systems i.e., LOLER, codes of compliance, weld specifications, geometric tolerance, • Responsible for interpreting Competent in computer based analytical techniques including finite element analysis, CAD modelling and engineering schematics (Abaqus, S-Frame), • Supporting the manufacturing, assembly, lifting, handling, and installation processes of Submarine Structures, Modules and Components, • Supporting towards production of concept drawings, layouts, and other technical outputs consistent with contractual requirements to meet target dates and budget demands, • Engineering Degree BEng/MEng or equivalent experience, • Civil/Mechanical/Structural Based and Chartered Engineer CEng Status or Incorporated Engineer IEng Status nearing CEng Status, • Expertise in structural steel analysis and Design, • Fully conversant in use of Eurocodes and British Standards, • Competent in reviewing and checking of Design Outputs, • Good understanding of mechanical engineering, structural steelwork, knowledge of lifting handling and LOLER, • Working knowledge of ABAQUS (Software), S-Frame Foran, MathCAD and excel As well as a competitive pension scheme, BAE Systems also offers employee share plans, an extensive range of flexible discounted health, wellbeing and lifestyle benefits, including a green car scheme, private health plans and shopping discounts – you may also be eligible for an annual incentive. The Specialist Structures Department team: As a Principal Engineer, you will be working with a dual function team (design and engineers) consisting of 14 people at various seniority levels. The team is responsible for engineering assessments of the designs in support of build. You will be working in conjunction with design to produce equipment and/or support operation in production to produce safety-critical equipment. We offer relocation support packages across all Submarines roles, subject to meeting eligibility criteria. Why BAE Systems? This is a place where you’ll be able to make a real difference. You’ll be part of an inclusive culture that values diversity of thought, rewards integrity, and merit, and where you’ll be empowered to fulfil your potential. We welcome people from all backgrounds and want to make sure that our recruitment processes are as inclusive as possible. If you have a disability or health condition (for example dyslexia, autism, an anxiety disorder etc.) that may affect your performance in certain assessment types, please speak to your recruiter about potential reasonable adjustments. 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: 19th December 2025 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-MS1 #LI-Hybrid

Job Title: Principal/Senior Engineer – Structural (Shock & Dynamics) Location: Barrow in Furness. We offer a range of hybrid and flexible working arrangements – please speak to your recruiter about the options for this particular role. Salary: Up to £57,500 What you’ll be doing: • Lead the development of the functional requirements and supporting V&V evidence for secondary structures to support design justification documentation set, • Oversee the spatial design and drawing outputs for secondary structures in accordance with process instructions and standard design guidance, • Follow internal procedures and develop evidence of compliance through written calculations and reports, • Undertake structural calculations and (or) peer review checking and approval activities, • Lead and support the identification and rapid closure of issues emerging from all product lifecycle stages, • Ensure the appropriate engineering guidance is implemented to ensure robust and efficient calculations are implemented early with a “right first time” mind set Essential: • Experience of undertaking structural calculations, • Understanding the principals of structural mechanics and dynamics, • Experience of developing structural requirements and V&V evidence, • Experience in using Finite Element Analysis (FEA) Software, • Experience in presenting technical arguments clearly and simply, • Knowledge of Abaqus FEA and Simcenter or willingness to learn, • Chartered Engineer (or on route to becoming Chartered) As well as a competitive pension scheme, BAE Systems also offers employee share plans, an extensive range of flexible discounted health, wellbeing and lifestyle benefits, including a green car scheme, private health plans and shopping discounts – you may also be eligible for an annual incentive. The Secondary Structures Department: Join the newly established Secondary Structures Department, a dynamic and forward-thinking team at the forefront of submarine structural engineering. As part of this innovative group, you will play a critical role in supporting structural requirements and conducting complex simulations of internal submarine structures. Your expertise will help safeguard essential equipment against naval shock events and various load conditions, ensuring optimal performance and durability. Beyond technical excellence, this team thrives on collaboration, providing structural design guidance to both internal and external stakeholders during key design reviews. We offer relocation support packages across all Submarines roles, subject to meeting eligibility criteria Why BAE Systems? This is a place where you’ll be able to make a real difference. You’ll be part of an inclusive culture that values diversity of thought, rewards integrity, and merit, and where you’ll be empowered to fulfil your potential. We welcome people from all backgrounds and want to make sure that our recruitment processes are as inclusive as possible. If you have a disability or health condition (for example dyslexia, autism, an anxiety disorder etc.) that may affect your performance in certain assessment types, please speak to your recruiter about potential reasonable adjustments. 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: 19th December 2025 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-MS1 #LI-Hybrid

Job Title: Principal Engineer – Nuclear (Nuclear Safety Regulation & Interface) Location: Barrow-in-Furness. We offer a range of hybrid and flexible working arrangements – please speak to your recruiter about the options for this particular role Salary: Competitive What you’ll be doing: • Managing and providing independent advice and guidance on the requirements of the Nuclear Site Licence, Authorisation and Environmental Permits to relevant business teams to ensure compliance with both statutory and contractual obligations, • Providing advice to the business to ensure that nuclear and radiation safety principles are applied appropriately to the development of compliant business wide standards, processes, management arrangements and documentation, • Directly supporting and influencing leaders and managers throughout the business to comply with key nuclear legislation to enable delivery of the complex Submarine platform, • Acting as a point of contact, developing and managing the interface arrangements between the business and the external regulatory authorities (ONR, DNSR & EA) and industry partners (MoD) Essential: • Experience and/ or knowledge of the Nuclear (or other highly regulated) industry and regulatory framework, • Experience of technical writing and persuasive written argument, • Engineering or Science (suitable discipline) degree, • Professional membership of an institution (or eligible for) As well as a competitive pension scheme, BAE Systems also offers employee share plans, an extensive range of flexible discounted health, wellbeing and lifestyle benefits, including a green car scheme, private health plans and shopping discounts – you may also be eligible for an annual incentive. The Nuclear Safety Regulation & Interface (NSRI) team: As a Principal Engineer within NSRI, you will be responsible for managing a small specialist team to provide advice and guidance to the business on nuclear site licensing, authorisation, and environmental permitting. The role manages arrangements for demonstration of compliance with relevant legal/contractual obligations, arrangements for interface with Regulators/co-Authorises and arrangements for delivery of an effective Operational Experience Feedback system. We offer relocation support packages across all Submarines roles, subject to meeting eligibility criteria. Why BAE Systems? This is a place where you’ll be able to make a real difference. You’ll be part of an inclusive culture that values diversity of thought, rewards integrity, and merit, and where you’ll be empowered to fulfil your potential. We welcome people from all backgrounds and want to make sure that our recruitment processes are as inclusive as possible. If you have a disability or health condition (for example dyslexia, autism, an anxiety disorder etc.) that may affect your performance in certain assessment types, please speak to your recruiter about potential reasonable adjustments. 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: 4th December 2025 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-GM3 #LI-Hybrid

Job Title: Principal Engineer – Test Integration Location: Barrow-in-Furness. On-Site Salary: Competitive What you’ll be doing: • Utilising technical information gathered from various stakeholders such as design teams to produce test documentation that will evaluate the rigour of the systems under test., • Understanding and interpreting the customer needs for integration activities and affect these once agreed as deliverables, • Undertaking integration testing in line with approved test procedures and taking ownership and responsibility for assigned systems verification and validation activities, • Investigating complex technical faults and queries of the (to be) integrated systems based on a considerable understanding of the underlying technical design, • Being able to gain an ample understanding of the underlying technical design of the systems under test and act as a technical liaison between design and commissioning teams on test related topics, • Compiling and communicating test/fault/investigation evidence and reports in verbal, informal and formal written mediums, • Developing test strategies and procedures in collaboration with Systems design teams Essential: • Relevant qualification or engineering experience held (Degree/HNC/HND or equivalent), • Ability to provide technical knowledge & instruction to emergent incidents, • Knowledge and understanding to provide technical guidance to Control Systems, • Knowledge and understanding of Electrical Testing and / or Software Testing As well as a competitive pension scheme, BAE Systems also offers employee share plans, an extensive range of flexible discounted health, wellbeing and lifestyle benefits, including a green car scheme, private health plans and shopping discounts – you may also be eligible for an annual incentive. The Test & Integration team: As a Principal Integration Test Engineer within the Test & Integration team, you will have the opportunity of developing and performing innovative integration testing, covering specialised systems of state-of-the-art electrical programmable equipment. You will also have a pivotal input to the development and creation of complex test procedures to govern critical de-risking activities. This team plays a critical role in testing the software of vital boat systems, writing test procedures and delivering measures to significant stages of the submarine build, and is a team that is expected to grow rapidly, allowing for development opportunities. We offer relocation support packages across all Submarines roles, subject to meeting eligibility criteria. Why BAE Systems? This is a place where you’ll be able to make a real difference. You’ll be part of an inclusive culture that values diversity of thought, rewards integrity, and merit, and where you’ll be empowered to fulfil your potential. We welcome people from all backgrounds and want to make sure that our recruitment processes are as inclusive as possible. If you have a disability or health condition (for example dyslexia, autism, an anxiety disorder etc.) that may affect your performance in certain assessment types, please speak to your recruiter about potential reasonable adjustments. 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: 4th December 2025 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

Job Title: Senior/Principal Platform Systems Mechanical Engineer Location: Barrow-in-Furness. This position will require a full-time presence on-site Salary: Competitive What you’ll be doing: • Developing the package of design evidence required to justify a safe, effective design and generate customer confidence in the design solution, • Specifying and assisting in the build of prototypes, products and systems suitable for testing, • Providing timely corrective actions on all assigned defects and issues, • Ensuring that commitments are agreed, reviewed and met, • Mentoring junior engineers regarding technical matters, • Making presentations effectively to technical and management audiences and within this, be able to identify and keep abreast of novel technical concepts and markets, • Educated to degree level in Engineering, Mechanical or Science subjects, • Be able to design documentation with the ability to present these to customers and wider groups, • Have the ability to solve complex engineering calculations As well as a competitive pension scheme, BAE Systems also offers employee share plans, an extensive range of flexible discounted health, wellbeing and lifestyle benefits, including a green car scheme, private health plans and shopping discounts – you may also be eligible for an annual incentive. The Mechanical Platform Systems team: Being part of a team, you will have a great opportunity to be involved in the planning and reactive support to ensure that the engineering aspects of testing and commissioning activities are undertaken in a safe and appropriate way whilst ensuring design intent are maintained. It’s a fantastic opportunity to be a part of some of our most complex projects to date and to have great opportunity career development. We offer relocation support across all Submarine roles, subject to meeting eligibility criteria Why BAE Systems? This is a place where you’ll be able to make a real difference. You’ll be part of an inclusive culture that values diversity of thought, rewards integrity, and merit, and where you’ll be empowered to fulfil your potential. We welcome people from all backgrounds and want to make sure that our recruitment processes are as inclusive as possible. If you have a disability or health condition (for example dyslexia, autism, an anxiety disorder etc.) that may affect your performance in certain assessment types, please speak to your recruiter about potential reasonable adjustments. 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: 10th December 2025 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-MS1 #LI-Onsite

Job Title: Senior/Principal Platform Systems Mechanical Engineer Location: Barrow-in-Furness. This position will require a full-time presence on-site Salary: Competitive What you’ll be doing: • Developing the package of design evidence required to justify a safe, effective design and generate customer confidence in the design solution, • Specifying and assisting in the build of prototypes, products and systems suitable for testing, • Providing timely corrective actions on all assigned defects and issues, • Ensuring that commitments are agreed, reviewed and met, • Mentoring junior engineers regarding technical matters, • Making presentations effectively to technical and management audiences and within this, be able to identify and keep abreast of novel technical concepts and markets, • Educated to degree level in Engineering, Mechanical or Science subjects, • Be able to design documentation with the ability to present these to customers and wider groups, • Have the ability to solve complex engineering calculations As well as a competitive pension scheme, BAE Systems also offers employee share plans, an extensive range of flexible discounted health, wellbeing and lifestyle benefits, including a green car scheme, private health plans and shopping discounts – you may also be eligible for an annual incentive. The Mechanical Platform Systems team: Being part of a team, you will have a great opportunity to be involved in the planning and reactive support to ensure that the engineering aspects of testing and commissioning activities are undertaken in a safe and appropriate way whilst ensuring design intent are maintained. It’s a fantastic opportunity to be a part of some of our most complex projects to date and to have great opportunity career development. We offer relocation support across all Submarine roles, subject to meeting eligibility criteria Why BAE Systems? This is a place where you’ll be able to make a real difference. You’ll be part of an inclusive culture that values diversity of thought, rewards integrity, and merit, and where you’ll be empowered to fulfil your potential. We welcome people from all backgrounds and want to make sure that our recruitment processes are as inclusive as possible. If you have a disability or health condition (for example dyslexia, autism, an anxiety disorder etc.) that may affect your performance in certain assessment types, please speak to your recruiter about potential reasonable adjustments. 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: 10th December 2025 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-MS1 #LI-Onsite

Job Title: Principal Safety Engineer – Safety & Environmental Engineering Location: Barrow-in-Furness – we offer a range of hybrid and flexible working arrangements – please speak to your recruiter about the options for this particular role. Salary: Competitive What you’ll be doing: • Provide technical leadership as a subject matter expert in safety engineering, • Mentor and develop engineers, guiding safety analysis and influencing design decisions, • Analyse and influence nuclear submarine design using safety engineering techniques, focussing on major hazards (fires, explosions including DSEAR, steam release), • Apply engineering judgement to justify design safety and compliance, • Interface with regulators, clients within the MOD and internal stakeholders Essential: • Degree qualified in a relevant STEM discipline or equivalent experience, • Strong analytical, written and oral communication skills with a practical and pragmatic approach to problem solving, • Proven ability to produce clear, structured safety case arguments and supporting technical documentation for complex systems, • Experience in a highly regulated industries (nuclear, oil and gas, maritime, aerospace), • Experience in DSEAR and fire risk assessments, including hazard identification and analysis. As well as a competitive pension scheme, BAE Systems also offers employee share plans, an extensive range of flexible discounted health, wellbeing and lifestyle benefits, including a green car scheme, private health plans and shopping discounts – you may also be eligible for an annual incentive. The Safety & Environmental team This is an exciting opportunity to join an established team tasked which offers exposure to the wider strategic initiative. You will be working with six people from principals to apprentices, liaising with operational managers, heads of departments as well as the Health & Safety teams. This role offers exposure to the Wider Control Damage Hazards team whilst individually being given the opportunity for professional growth within the function. We offer relocation support packages across all Submarines roles, subject to meeting eligibility criteria. Why BAE Systems? This is a place where you’ll be able to make a real difference. You’ll be part of an inclusive culture that values diversity of thought, rewards integrity, and merit, and where you’ll be empowered to fulfil your potential. We welcome people from all backgrounds and want to make sure that our recruitment processes are as inclusive as possible. If you have a disability or health condition (for example dyslexia, autism, an anxiety disorder etc.) that may affect your performance in certain assessment types, please speak to your recruiter about potential reasonable adjustments. 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: 9th December 2025 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-KP1 #LI-hybrid

Job Title: Principal Mechanical Engineer – PNED Location: Barrow-in-Furness. We offer a range of hybrid and flexible working arrangements – please speak to your recruiter about the options for this role Salary: £45,628 – £57,500 dependent on experience What you’ll be doing: • Collaborate closely with the build organisation, providing engineering support to ensure the final product aligns with original design intent, • Demonstrate a strong understanding of key requirements and critical dimensions related to major structural components, • Lead the assessment and implementation of design changes impacting primary structural elements, whether driven by emergent issues, continuous improvement, or process updates, • Support, or where appropriate, serve as the engineering representative within test and authorisation groups, • Develop specialised knowledge of the unique build sequence of the Reactor Compartment Unit and deliver ongoing engineering support throughout construction, • Represent the engineering function during the planning and execution of major construction milestones within the Reactor Compartment Unit’s scope, • Investigate and present robust technical solutions to challenges encountered during the construction of the Naval Reactor Plant Essential: • Degree-level qualification in Engineering, preferably with a focus on Mechanical or Structural disciplines, • Proficient in interpreting mechanical drawings, with a solid understanding of geometric dimensioning and tolerancing (GD&T), • Familiarity with welding engineering principles and non-destructive examination (NDE) techniques, • Understanding of stress, fatigue, and thermal analysis principles in engineering applications, • Awareness of nuclear radiation shielding requirements and best practices, • Prior experience working within a nuclear plant environment As well as a competitive pension scheme, BAE Systems also offers employee share plans, an extensive range of flexible discounted health, wellbeing and lifestyle benefits, including a green car scheme, private health plans and shopping discounts – you may also be eligible for an annual incentive. The Platform Nuclear Engineering Department team: As a Principal Mechanical Engineer – PNED, you will play a critical role in supporting the design, build, and test phases of the Naval Reactor Plant (NRP) across multiple programmes, ensuring alignments with the original design intent. This includes leading the resolution of complex technical issues encountered during construction and testing, with a focus on developing robust engineering solutions and maintaining the integrity of the supporting safety case. You will provide expert guidance to internal teams including Engineering Delivery, Test & Commissioning, Operations, and Project Management. Additionally, you will represent the business in collaboration with key external stakeholders, including the Ministry of Defence (MoD) and Rolls-Royce Power, ensuring effective coordination across the wider enterprise. We offer relocation support across all Submarine roles, subject to meeting eligibility criteria Why BAE Systems? This is a place where you’ll be able to make a real difference. You’ll be part of an inclusive culture that values diversity of thought, rewards integrity, and merit, and where you’ll be empowered to fulfil your potential. We welcome people from all backgrounds and want to make sure that our recruitment processes are as inclusive as possible. If you have a disability or health condition (for example dyslexia, autism, an anxiety disorder etc.) that may affect your performance in certain assessment types, please speak to your recruiter about potential reasonable adjustments. 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: 19th December 2025 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-MS1 #LI-Hybrid

Job Title: Principal Radiation Physicist Location: Barrow-in-Furness. We offer a range of hybrid and flexible working arrangements – please speak to your recruiter about the options for this particular role Salary: Competitive What you’ll be doing: • Supervising and conducting analysis and experiments to support system qualification, • Supporting progression of design optimisation, • Producing and reviewing radiological safety justifications for proposed design solutions, • Direct development of in-house toolsets in support of the department goals Essential: • Relevant STEM degree in Physics/Mathematics/Chemistry/Nuclear Engineering, • Demonstrable experience of radiation transport codes such as MCNP/MCBEND/Attilla, • Understanding of radiation physics, • Experience of radiation safety studies & behaviours, • Experience of radiation metrology As well as a competitive pension scheme, BAE Systems also offers employee share plans, an extensive range of flexible discounted health, wellbeing and lifestyle benefits, including a green car scheme, private health plans and shopping discounts – you may also be eligible for an annual incentive. The Radiation Physics & Shielding team Our team is responsible for the design and validation of radiation shielding for the UK’s nuclear powered submarine fleet. We are engaged across three different submarine programmes in different stages of the engineering lifecycle designing new shields, providing design change assessment into the build programme, and conducting radiation metrology on-board during commissioning. Alongside our primary work we conduct radiological safety studies for several other areas, design novel radiation detectors and are developing capability in the field of radiation damage to electronics. We offer relocation support packages across all Submarines roles, subject to meeting eligibility criteria. Why BAE Systems? This is a place where you’ll be able to make a real difference. You’ll be part of an inclusive culture that values diversity of thought, rewards integrity, and merit, and where you’ll be empowered to fulfil your potential. We welcome people from all backgrounds and want to make sure that our recruitment processes are as inclusive as possible. If you have a disability or health condition (for example dyslexia, autism, an anxiety disorder etc.) that may affect your performance in certain assessment types, please speak to your recruiter about potential reasonable adjustments. 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: 29th November 2025 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-GM3 #LI-Hybrid

\n Job Title: Principal Engineer – Test Integration \n Location: Barrow-in-Furness. On-Site \n Salary: Competitive \n What you’ll be doing: \n\n • Utilising technical information gathered from various stakeholders such as design teams to produce test documentation that will evaluate the rigour of the systems under test.\n, • Understanding and interpreting the customer needs for integration activities and affect these once agreed as deliverables\n, • Undertaking integration testing in line with approved test procedures and taking ownership and responsibility for assigned systems verification and validation activities\n, • Investigating complex technical faults and queries of the (to be) integrated systems based on a considerable understanding of the underlying technical design\n, • Being able to gain an ample understanding of the underlying technical design of the systems under test and act as a technical liaison between design and commissioning teams on test related topics\n, • Compiling and communicating test/fault/investigation evidence and reports in verbal, informal and formal written mediums\n, • Developing test strategies and procedures in collaboration with Systems design teams\n, • Relevant qualification or engineering experience held (Degree/HNC/HND or equivalent)\n, • Ability to provide technical knowledge & instruction to emergent incidents\n, • Knowledge and understanding to provide technical guidance to Control Systems\n, • Knowledge and understanding of Electrical Testing and / or Software Testing\n #LI-AG1 \n #LI-Onsite \n

\n Job Title: Principal Safety Engineer – Safety & Environmental Engineering \n Location: Barrow-in-Furness – we offer a range of hybrid and flexible working arrangements – please speak to your recruiter about the options for this particular role. \n Salary: Competitive \n What you’ll be doing: \n\n • Provide technical leadership as a subject matter expert in safety engineering\n, • Mentor and develop engineers, guiding safety analysis and influencing design decisions\n, • Analyse and influence nuclear submarine design using safety engineering techniques, focussing on major hazards (fires, explosions including DSEAR, steam release)\n, • Apply engineering judgement to justify design safety and compliance\n, • Interface with regulators, clients within the MOD and internal stakeholders\n, • Degree qualified in a relevant STEM discipline or equivalent experience\n, • Strong analytical, written and oral communication skills with a practical and pragmatic approach to problem solving\n, • Proven ability to produce clear, structured safety case arguments and supporting technical documentation for complex systems\n, • Experience in a highly regulated industries (nuclear, oil and gas, maritime, aerospace)\n, • Experience in DSEAR and fire risk assessments, including hazard identification and analysis.\n #LI-KP1 #LI-hybrid \n

\n Job Title: Principal Mechanical Engineer – PNED \n Location: Barrow-in-Furness. We offer a range of hybrid and flexible working arrangements – please speak to your recruiter about the options for this role \n Salary: £45,628 – £57,500 dependent on experience \n What you’ll be doing: \n\n • Collaborate closely with the build organisation, providing engineering support to ensure the final product aligns with original design intent\n, • Demonstrate a strong understanding of key requirements and critical dimensions related to major structural components\n, • Lead the assessment and implementation of design changes impacting primary structural elements, whether driven by emergent issues, continuous improvement, or process updates\n, • Support, or where appropriate, serve as the engineering representative within test and authorisation groups\n, • Develop specialised knowledge of the unique build sequence of the Reactor Compartment Unit and deliver ongoing engineering support throughout construction\n, • Represent the engineering function during the planning and execution of major construction milestones within the Reactor Compartment Unit’s scope\n, • Investigate and present robust technical solutions to challenges encountered during the construction of the Naval Reactor Plant\n, • Degree-level qualification in Engineering, preferably with a focus on Mechanical or Structural disciplines\n, • Proficient in interpreting mechanical drawings, with a solid understanding of geometric dimensioning and tolerancing (GD&T)\n, • Familiarity with welding engineering principles and non-destructive examination (NDE) techniques\n, • Understanding of stress, fatigue, and thermal analysis principles in engineering applications\n, • Awareness of nuclear radiation shielding requirements and best practices\n, • Prior experience working within a nuclear plant environment\n #LI-MS1 \n #LI-Hybrid \n \n \n\n \n

Job Title: Principal Safety Engineer - Safety & Environmental Engineering Location: Barrow-in-Furness - we offer a range of hybrid and flexible working arrangements - please speak to your recruiter about the options for this particular role. Salary: Competitive What you'll be doing: Provide technical leadership as a subject matter expert in safety engineering Mentor and develop engineers, guiding safety analysis and influencing design decisions Analyse and influence nuclear submarine design using safety engineering techniques, focussing on major hazards (fires, explosions including DSEAR, steam release) Apply engineering judgement to justify design safety and compliance Interface with regulators, clients within the MOD and internal stakeholders Develop and review safety case documentation to substantiate design safety Your skills and experiences: Essential: Degree qualified in a relevant STEM discipline or equivalent experience Strong analytical, written and oral communication skills with a practical and pragmatic approach to problem solving Proven ability to produce clear, structured safety case arguments and supporting technical documentation for complex systems Ability to identify, assess, and mitigate hazards in complex engineering environments Desirable: Experience in a highly regulated industries (nuclear, oil and gas, maritime, aerospace) Experience in DSEAR and fire risk assessments, including hazard identification and analysis. Familiarity with hazard analysis techniques (e.g. HAZOP, FMEA, Fault and Event Tree Analysis) Benefits As well as a competitive pension scheme, BAE Systems also offers employee share plans, an extensive range of flexible discounted health, wellbeing and lifestyle benefits, including a green car scheme, private health plans and shopping discounts - you may also be eligible for an annual incentive. The Safety & Environmental team This is an exciting opportunity to join an established team tasked which offers exposure to the wider strategic initiative. You will be working with six people from principals to apprentices, liaising with operational managers, heads of departments as well as the Health & Safety teams. This role offers exposure to the Wider Control Damage Hazards team whilst individually being given the opportunity for professional growth within the function. We offer relocation support packages across all Submarines roles, subject to meeting eligibility criteria. Why BAE Systems? This is a place where you'll be able to make a real difference. You'll be part of an inclusive culture that values diversity of thought, rewards integrity, and merit, and where you'll be empowered to fulfil your potential. We welcome people from all backgrounds and want to make sure that our recruitment processes are as inclusive as possible. If you have a disability or health condition (for example dyslexia, autism, an anxiety disorder etc.) that may affect your performance in certain assessment types, please speak to your recruiter about potential reasonable adjustments. 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.

Job Title: Independent Nuclear Assurance (Principal Inspector) Location: Barrow-in-Furness. We offer a range of hybrid and flexible working arrangements - please speak to your recruiter about the options for this particular role Salary: Competitive What you'll be doing: Performing independent inspection, surveillance and concurrence of nuclear work on facilities, plant, equipment and nuclear support services, on-board and on-site to evaluate the nuclear and radiological safety and security performance at Barrow Inspecting and assessing the business's capability to progress the submarine build and/or projects in the Site Redevelopment Programme to their relevant next stage through the 'Hold Point Control' process Inspecting the business against the requirements of relevant legislation to assess the business' level of compliance Communicating, both in writing and verbally, the conclusions of inspections and their findings to various stakeholders at all levels, including external regulators, board members, senior managers and business peers Independently assessing the business' emergency arrangements exercises, providing feedback to those developing and maintaining the arrangements Providing oversight and challenge to various safety/ security committees and groups to ensure due process is being followed, and continuing nuclear safety is not compromised Maintaining oversight of Independent Peer Review activity related to safety documentation aligned with individual Assurance Plans Developing, maintaining and deploying an effective Operational Experience feedback system for the Barrow site that encompasses all relevant nuclear and radiological incidents and events, from both internal and external sources Your skills and experiences: Essential: Working knowledge of nuclear site licence conditions/authorisation conditions & working on a nuclear licenced sites from a similar role and/or security regulations/ or an equivalent regulated industry. Experience of managing programmes of work within the nuclear industry or equivalent highly regulated industry Experience of engaging and influencing senior management and external regulators Desirable: Marine Engineering Submariner background - Nuclear Plant Operators or experience of Nuclear Submarine Build & Commissioning Degree or equivalent in STEM subject Experience in Audit & Regulation Benefits: As well as a competitive pension scheme, BAE Systems also offers employee share plans, an extensive range of flexible discounted health, wellbeing and lifestyle benefits. Including a green car scheme, private health plans and shopping discounts - you may also be eligible for an annual incentive. The Independent Nuclear Assurance Team: As an Independent Nuclear Assurance Inspector, you will be working as part of a group of regulatory inspectors reporting to the Senior Engineering Manager (Independent Nuclear Assurance). The Independent Nuclear Assurance team acts as the internal regulator for the Submarines business, forming an evidence-based independent view of the business' nuclear and radiological safety and security performance. Through delivery of a comprehensive inspection programme, the team develops the evidence to support its findings and conclusions and has the opportunity to influence change at every level of the business including, the safety of our boat delivery programmes. The team form part of the Nuclear Safety and Regulation Department within the Nuclear Safety and Security Directorate. One of the main attractions of this role is the opportunity to work with all areas of the business. With the diversity of this role, you can be one day carrying out an on-board boat or facility inspection and the next interviewing a director in relation to a specific business requirement. We offer relocation support across all Submarines roles, subject to meeting eligibility criteria. Why BAE Systems? This is a place where you'll be able to make a real difference. You'll be part of an inclusive culture that values diversity of thought, rewards integrity, and merit, and where you'll be empowered to fulfil your potential. 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.

Job Title: Principal Engineer - Operating Documentation Location: Barrow-In-Furness or Filton. We offer a range of hybrid and flexible working arrangements - please speak to your recruiter about the options for this particular role. Salary: Competitive What you'll be doing: Providing input and support to the Technical Documentation Manager to aid in the production and management of Operating Documentation and Damage Control Documentation Constructing procedural documents for all classes of UK Submarines, both in-service and future platforms Producing manuals for the safe operation of all systems and equipment, including hotel services, weapons, combat systems, propulsion systems and command guidance Providing technical Verification and Validation of all forms of Operating Documentation and Damage Control Documentation Working alongside other Support Engineering teams to provide support and interpretation of Technical Information from external suppliers and the Interactive Electronic Technical Publication (IETP) Interpreting technical data including (but not limited to) drawings, manufacturers handbooks and design safety justifications for the production of Operating Documentation and Damage Control Documentation Your skills and experiences: Essential: Experience of working on or with Royal Navy Submarines, particularly as part of the Ship Control or Tactical Picture Organisations Ability to work with multiple and varied sources of information to create technical documentation to a defined specification Experience in interpreting various sources of design, engineering, procedural and OEM information to produce viable Operating Information Desirable: HNC / HND / equivalent or higher in an engineering discipline Experience of working in a Technical Publications or similar environment Competent with Microsoft products to a level applicable to the role, especially Word, Access and Excel Benefits: As well as a competitive pension scheme, BAE Systems also offers employee share plans, an extensive range of flexible discounted health, wellbeing and lifestyle benefits, including a green car scheme, private health plans and shopping discounts - you may also be eligible for an annual incentive. The Technical Publications team: Join a dynamic and growing department where your expertise in technical documentation will play a crucial role in long-term, high-impact projects. As Principal Engineer, you'll be part of a collaborative team of 10 skilled Technical Authors, working on innovative engineering initiatives that shape the future. This role offers a structured training and development plan, ensuring that you gain the skills and experience needed for career progression, making you an integral part of our succession plan. We actively support further education within engineering disciplines, helping you expand your technical expertise and leadership potential. Beyond authoring documentation, you'll have the critical responsibility of verifying technical accuracy, ensuring precision and reliability in every detail. We offer relocation support packages across all Submarines roles, subject to meeting eligibility criteria. Why BAE Systems? This is a place where you'll be able to make a real difference. You'll be part of an inclusive culture that values diversity of thought, rewards integrity, and merit, and where you'll be empowered to fulfil your potential. We welcome people from all backgrounds and want to make sure that our recruitment processes are as inclusive as possible. If you have a disability or health condition (for example dyslexia, autism, an anxiety disorder etc.) that may affect your performance in certain assessment types, please speak to your recruiter about potential reasonable adjustments. 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.

Job Title: Principal Engineer - Support Engineering Location: ?Barrow-in-Furness, Filton, Brough OR Coventry. 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 What you'll be doing: Assist the Senior Engineering Manager in delivering effective ILS outputs for the Strategic Weapon System Support (SWSS) solution Provide expert support knowledge in responding to engineering queries from the MOD or Submarine Enterprise partners about the design, safety, maintenance, and operation of equipment and systems on in-service submarines Offer expert advice on equipment in line with current governance processes, in response to engineering queries from the MOD Design Authority Deliver support to the appropriate Engineering and Support Managers in the preparation of briefs and reports for both internal Provide technical support for creating the maintenance plan, ensuring it meets Design Authority requirements, and contribute to work aimed at reducing duration, including related risks and issues and external reporting requirements Provision of SWSS technical information from previously published sources where still available Your skills and experiences Knowledge of DN Class Platform / SWSS (Strategic Weapon System Support), operation, maintenance and training Strategic Weapon System (SWS) qualification Knowledge of MOD Defence Equipment & Support (DE&S) and Submarine Delivery Agency (SDA) processes Knowledge of the complete engineering lifecycle with some experience of operating in a number of phases Strong awareness of Product Safety & Environmental policies and SHE Benefits As well as a competitive pension scheme, BAE Systems also offers employee share plans, an extensive range of flexible discounted health, wellbeing and lifestyle benefits, including a green car scheme, private health plans and shopping discounts - you may also be eligible for an annual incentive. The Datum Pack team This specialist role works closely with the Product Configuration team, particularly in relation to managing the Datum Pack, which is just one part of their responsibilities. This SQEP technical advisory role will collaborate directly with the technical delivery teams who manage and organize product-related items, providing them with authoritative guidance and technical assurance. You will become part of a rapidly growing team focused on support and supportability within a fast-paced and continuously evolving environment. The role requires sharpness and adaptability to effectively meet the demands of this challenging setting. We offer relocation support packages across all Submarines roles, subject to meeting eligibility criteria Why BAE Systems? This is a place where you'll be able to make a real difference. You'll be part of an inclusive culture that values diversity of thought, rewards integrity, and merit, and where you'll be empowered to fulfil your potential. We welcome people from all backgrounds and want to make sure that our recruitment processes are as inclusive as possible. If you have a disability or health condition (for example dyslexia, autism, an anxiety disorder etc.) that may affect your performance in certain assessment types, please speak to your recruiter about potential reasonable adjustments. 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.

Job Title: Principal Manufacturing Technology Engineer Location: Barrow-in-Furness. We offer a range of hybrid and flexible working arrangements - please speak to your recruiter about the options for this particular role Salary: Circa £50,000 depending on skills and experience What you'll be doing Lead and support with complex Manufacturing Technology projects throughout their full lifecycle including performing initial research and market scans, proof of concepts, pilots and full implementation projects Work collectively in a team, developing and implementing projects to improve the Submarines programme, supporting, developing and leading team members as required Liaise with and manage internal and external stakeholders such as inter-business teams, BAE sectors including Group and suppliers Apply problem solving techniques to progress technology solutions to improve Manufacturing and Construction processes Produce and review Manufacturing Technology documents to support the projects through their lifecycle and ensure they are stored appropriately Develop and support business justifications to implement new and replacement technologies into Manufacturing Production areas and develop the Cost Benefit from doing so Develop and support technology road maps Your skills and experiences Essential Level 4 Qualification in a related subject or equivalent experience Heavy Manufacturing experience and knowledge, in particular within Welding or similar disciplines Experience in leading process improvements, changes into an organisation and developing business cases or justifications Experience of engaging with cross functional teams and external stakeholders Knowledge of Technology Readiness Level (TRL) Desirable: Knowledge of the Catapult network Experience of Research & Development activities Benefits As well as a competitive pension scheme, BAE Systems also offers employee share plans, an extensive range of flexible discounted health, wellbeing and lifestyle benefits, including a green car scheme, private health plans and shopping discounts - you may also be eligible for an annual incentive. The Manufacturing Technology team Within the team, we are dedicated to advancing and integrating cutting-edge technologies that enhance manufacturing and construction processes across all submarine programs. Our team collaborates closely with a wide range of internal and external stakeholders, including Manufacturing Engineering, Operations, IT, BAE sectors and industry partners. This collaborative approach provides a unique opportunity to contribute to diverse projects, allowing you to deepen your expertise in manufacturing, construction, and the intricate relationships between functions that drive project success. Why BAE Systems? This is a place where you'll be able to make a real difference. You'll be part of an inclusive culture that values diversity of thought, rewards integrity, and merit, and where you'll be empowered to fulfil your potential. We welcome people from all backgrounds and want to make sure that our recruitment processes are as inclusive as possible. If you have a disability or health condition (for example dyslexia, autism, an anxiety disorder etc.) that may affect your performance in certain assessment types, please speak to your recruiter about potential reasonable adjustments. 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. #LI-CB1 #LI-hybrid

Job Title: Principal Safety & Environmental Engineer Location: Barrow-in-Furness. We offer a range of hybrid and flexible working arrangements - please speak to your recruiter about the options for this particular role. Salary: Negotiable, depending on experience What you'll be doing: • Develop, implement and maintain the Project Safety Management System within a Systems Engineering framework, • Produce and...

We offer a range of hybrid and flexible working arrangements – please speak to your recruiter about the options for this particular role Salary: Competitive What you'll be doing: - Managing and providing independent advice and guidance on the requirements of the Nuclear Site Licence, Authorisat

As a Principal Mechanical Engineer – PNED, you will play a critical role in supporting the design, build, and test phases of the Naval Reactor Plant (NRP) across multiple programmes, ensuring alignments with the original design intent. Principal Mechanical Engineer – PNED.

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Principal Mechanical Engineer – PNED. As a Principal Mechanical Engineer – PNED, you will play a critical role in supporting the design, build, and test phases of the Naval Reactor Plant (NRP) across multiple programmes, ensuring alignments with the original design intent.

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Principal Mechanical Engineer – PNED. As a Principal Mechanical Engineer – PNED, you will play a critical role in supporting the design, build, and test phases of the Naval Reactor Plant (NRP) across multiple programmes, ensuring alignments with the original design intent.

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