18 jobs found

.Senior Principal Data Scientist page is loaded Senior Principal Data Scientistlocations: UK - London (London Wall): Londontime type: Full timeposted on: Posted Todayjob requisition id: R107535 Senior Principal Data Scientist About the Business At Cirium our goal is to keep the world connected. We are the industry leader in aviation analytics; helping our customers understand the past, present, and predicting what will happen tomorrow. Our mission is to transform the aviation industry by enabling airlines, airports, travel companies, tech giants, aircraft manufacturers, financial institutions and many more accelerate their own digital transformation. You can learn more about Cirium About the Team Propulsion Labs is Cirium's innovation group, focused on solving complex, high impact problems in aviation analytics. We work in small, collaborative teams to explore ideas, test solutions, and scale products that deliver meaningful value to customers. Our environment supports autonomy, learning, and inclusive collaboration. About the Role As a Senior Principal Data Scientist , you will contribute deep technical expertise while helping shape best practices across the data science community. This is a senior individual contributor role with strong influence through mentorship, collaboration, and technical leadership. You will work closely with partners across product, engineering, and the business to design and deliver data driven solutions.We welcome candidates from a range of backgrounds and experiences who are excited to apply advanced analytics to real world problems. Responsibilities: Technical Leadership Act as the go-to expert for state-of-the-art advanced analytics, machine learning, and generative AI. Define and evolve best practices for complex modeling and design problems, ensuring scalability, robustness, and performance. Provide thought leadership on emerging technologies and methodologies relevant to aviation analytics. Mentorship & Collaboration Mentor and coach data scientists, fostering a culture of continuous learning and technical excellence. Collaborate closely with product managers, engineers, and domain experts to align data science initiatives with business objectives. Influence strategic decisions by translating complex technical insights into actionable recommendations. Hands-On Development Lead by example through hands-on coding and model development. Design, prototype, and validate innovative solutions for high-impact problems. Partner with engineering teams to deploy models into production environments. Domain Expertise Leverage deep knowledge of aviation, travel, or related industries to inform modeling approaches and deliver customer-centric solutions. Stay ahead of industry trends impacting data-driven products. Requirements: Data Mastery Comfortable working with large, complex, real-world datasets, preferably aviation-related. Expertise in data wrangling, feature engineering, and scalable data pipelines. Depth Experience: in at least one area, with experience across several (in approximate order of relevance):Predictive modeling over tabular data Deep Learning NLP + LLMs, GenAI agent pipelines Simulations Graph-based models Time-series forecasting Geospatial modeling Causal inference Reinforcement learning Optimization problems Anomaly detection Deployment Experience Proven track record of deploying or partnering on customer-facing production ML systems . Proficiency in Python and SQL (experience with distributed or cloud based data platforms is a plus) Ability to communicate technical ideas clearly to both technical and non technical audiences Working for you: We know that your wellbeing and happiness are key to a long and successful career. These are some of the benefits we are delighted to offer: Generous holiday allowance with the option to buy additional days Health screening, eye care vouchers and private medical benefits Wellbeing programs Life assurance Access to a competitive contributory pension scheme Save As You Earn share option scheme Travel Season ticket loan Electric Vehicle Scheme Optional Dental Insurance Maternity, paternity and shared parental leave Employee Assistance Programme Access to emergency care for both the elderly and children RECARES days, giving you time to support the charities and causes that matter to you Access to employee resource groups with dedicated time to volunteer Access to extensive learning and development resources Access to employee discounts scheme via Perks at WorkLearn more about the LexisNexis Risk team and how we work We know your well-being and happiness are key to a long and successful career. We are delighted to offer country specific benefits. Click to access benefits specific to your location. We are committed to providing a fair and accessible hiring process. If you have a disability or other need that requires accommodation or adjustment, please let us know by completing our or please contact 1-. Criminals may pose as recruiters asking for money or personal information. We never request money or banking details from job applicants. Learn more about spotting and avoiding scams . Please read our .We are an equal opportunity employer: qualified applicants are considered for and treated during employment without regard to race, color, creed, religion, sex, national origin, citizenship status, disability status, protected veteran status, age, marital status, sexual orientation, gender identity, genetic information, or any other characteristic protected by law. USA Job Seekers: . Cirium offers aviation and air travel data and analytics to help keep the world in motion. Our people are at the center of who we are and what we do. We put the interests of our customers unmistakably first, we are empowered by the trust we earn from each other and our customers, we share a common global vision for Cirium based diversity, inclusion and collaboration and our passion for discovery will transform industries. Our team delivers insight, built from decades of experience in the sector, enabling travel companies, aircraft manufacturers, airports, airlines and financial institutions, among others, to make logical and informed decisions which shape the future of travel, growing revenues and enhancing customer experiences.

Job Title: Principal Mechanical Engineer Location: Barrow-in-Furness, Hybrid We offer a range of hybrid and flexible working arrangements - please speak to your recruiter about the options for this particular role. Salary: Circa £55,000 depending on skills and experience 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 will be doing: In this role, you will lead the design and development of mechanical systems for next-generation Royal Navy submarines, with a focus on air purification and atmosphere monitoring systems. You will undertake system-level design, modelling and analysis , and produce design documentation, verification and validation evidence, and safety justifications. Working collaboratively with suppliers and cross-functional teams, you will support specification, qualification, and procurement activities. You will also play a key role in driving engineering governance through design reviews and peer reviews, while providing technical leadership across the project lifecycle. Core duties: You will design platform systems, sub-systems, and equipment, ensuring alignment with programme requirements and engineering standards You will undertake functional design activities, including modelling, analysis , and system performance evaluation You will produce and maintain design documentation, verification and validation evidence, and safety justifications You will support supplier engagement, including specification, qualification, and procurement of components You will collaborate with stakeholders across multidisciplinary project teams to ensure successful delivery You will drive engineering governance through design reviews, peer reviews, and technical oversight Essential skills Degree-level qualification, Chartered Engineer status, or working towards professional accreditation Mechanical engineering background in rotating machinery, components, or fluid dynamics Knowledge of platform-level constraints such as noise, shock, or survivability Experience integrating purification systems with submarine life-support, HVAC, and emergency systems Experience in the design of gas scrubbing, filtration, and environmental control systems (e.g. CO removal, O generation, contaminant management ) within complex , safety-critical environments The Mechanical Engineering team: The Mechanical Engineering team plays a key role in the design and development of submarine systems, delivering innovative solutions across complex and safety-critical environments. As a Principal Mechanical Engineer, you will contribute to system-level design, provide technical leadership , and support the development of advanced air purification and atmosphere monitoring systems, helping to shape the future of submarine capability. 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. 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, supporting 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 be proud of the difference you make. 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.

Job Title: Principal Mechanical Engineer Location: Barrow-in-Furness, Hybrid We offer a range of hybrid and flexible working arrangements - please speak to your recruiter about the options for this particular role. Salary: Circa £55,000 depending on skills and experience 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 will be doing: In this role, you will lead the design and development of mechanical systems for next-generation Royal Navy submarines, with a focus on air purification and atmosphere monitoring systems. You will undertake system-level design, modelling and analysis , and produce design documentation, verification and validation evidence, and safety justifications. Working collaboratively with suppliers and cross-functional teams, you will support specification, qualification, and procurement activities. You will also play a key role in driving engineering governance through design reviews and peer reviews, while providing technical leadership across the project lifecycle. Core duties: You will design platform systems, sub-systems, and equipment, ensuring alignment with programme requirements and engineering standards You will undertake functional design activities, including modelling, analysis , and system performance evaluation You will produce and maintain design documentation, verification and validation evidence, and safety justifications You will support supplier engagement, including specification, qualification, and procurement of components You will collaborate with stakeholders across multidisciplinary project teams to ensure successful delivery You will drive engineering governance through design reviews, peer reviews, and technical oversight Essential skills Degree-level qualification, Chartered Engineer status, or working towards professional accreditation Mechanical engineering background in rotating machinery, components, or fluid dynamics Knowledge of platform-level constraints such as noise, shock, or survivability Experience integrating purification systems with submarine life-support, HVAC, and emergency systems Experience in the design of gas scrubbing, filtration, and environmental control systems (e.g. CO removal, O generation, contaminant management ) within complex , safety-critical environments The Mechanical Engineering team: The Mechanical Engineering team plays a key role in the design and development of submarine systems, delivering innovative solutions across complex and safety-critical environments. As a Principal Mechanical Engineer, you will contribute to system-level design, provide technical leadership , and support the development of advanced air purification and atmosphere monitoring systems, helping to shape the future of submarine capability. 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. 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, supporting 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 be proud of the difference you make. 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.

Job Title: Principal Mechanical Engineer Location: Barrow-in-Furness, Hybrid We offer a range of hybrid and flexible working arrangements - please speak to your recruiter about the options for this particular role. Salary: Circa £55,000 depending on skills and experience 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 will be doing: In this role, you will lead the design and development of mechanical systems for next-generation Royal Navy submarines, with a focus on air purification and atmosphere monitoring systems. You will undertake system-level design, modelling and analysis , and produce design documentation, verification and validation evidence, and safety justifications. Working collaboratively with suppliers and cross-functional teams, you will support specification, qualification, and procurement activities. You will also play a key role in driving engineering governance through design reviews and peer reviews, while providing technical leadership across the project lifecycle. Core duties: You will design platform systems, sub-systems, and equipment, ensuring alignment with programme requirements and engineering standards You will undertake functional design activities, including modelling, analysis , and system performance evaluation You will produce and maintain design documentation, verification and validation evidence, and safety justifications You will support supplier engagement, including specification, qualification, and procurement of components You will collaborate with stakeholders across multidisciplinary project teams to ensure successful delivery You will drive engineering governance through design reviews, peer reviews, and technical oversight Essential skills Degree-level qualification, Chartered Engineer status, or working towards professional accreditation Mechanical engineering background in rotating machinery, components, or fluid dynamics Knowledge of platform-level constraints such as noise, shock, or survivability Experience integrating purification systems with submarine life-support, HVAC, and emergency systems Experience in the design of gas scrubbing, filtration, and environmental control systems (e.g. CO removal, O generation, contaminant management ) within complex , safety-critical environments The Mechanical Engineering team: The Mechanical Engineering team plays a key role in the design and development of submarine systems, delivering innovative solutions across complex and safety-critical environments. As a Principal Mechanical Engineer, you will contribute to system-level design, provide technical leadership , and support the development of advanced air purification and atmosphere monitoring systems, helping to shape the future of submarine capability. 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. 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, supporting 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 be proud of the difference you make. 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.

Job Title: Principal Mechanical Engineer Location: Barrow-in-Furness, Hybrid We offer a range of hybrid and flexible working arrangements - please speak to your recruiter about the options for this particular role. Salary: Circa £55,000 depending on skills and experience 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 will be doing: In this role, you will lead the design and development of mechanical systems for next-generation Royal Navy submarines, with a focus on air purification and atmosphere monitoring systems. You will undertake system-level design, modelling and analysis , and produce design documentation, verification and validation evidence, and safety justifications. Working collaboratively with suppliers and cross-functional teams, you will support specification, qualification, and procurement activities. You will also play a key role in driving engineering governance through design reviews and peer reviews, while providing technical leadership across the project lifecycle. Core duties: You will design platform systems, sub-systems, and equipment, ensuring alignment with programme requirements and engineering standards You will undertake functional design activities, including modelling, analysis , and system performance evaluation You will produce and maintain design documentation, verification and validation evidence, and safety justifications You will support supplier engagement, including specification, qualification, and procurement of components You will collaborate with stakeholders across multidisciplinary project teams to ensure successful delivery You will drive engineering governance through design reviews, peer reviews, and technical oversight Essential skills Degree-level qualification, Chartered Engineer status, or working towards professional accreditation Mechanical engineering background in rotating machinery, components, or fluid dynamics Knowledge of platform-level constraints such as noise, shock, or survivability Experience integrating purification systems with submarine life-support, HVAC, and emergency systems Experience in the design of gas scrubbing, filtration, and environmental control systems (e.g. CO removal, O generation, contaminant management ) within complex , safety-critical environments The Mechanical Engineering team: The Mechanical Engineering team plays a key role in the design and development of submarine systems, delivering innovative solutions across complex and safety-critical environments. As a Principal Mechanical Engineer, you will contribute to system-level design, provide technical leadership , and support the development of advanced air purification and atmosphere monitoring systems, helping to shape the future of submarine capability. 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. 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, supporting 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 be proud of the difference you make. 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.

Job Title: Principal Mechanical Engineer Location: Barrow-in-Furness, Hybrid We offer a range of hybrid and flexible working arrangements - please speak to your recruiter about the options for this particular role. Salary: Circa £55,000 depending on skills and experience 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 will be doing: In this role, you will lead the design and development of mechanical systems for next-generation Royal Navy submarines, with a focus on air purification and atmosphere monitoring systems. You will undertake system-level design, modelling and analysis , and produce design documentation, verification and validation evidence, and safety justifications. Working collaboratively with suppliers and cross-functional teams, you will support specification, qualification, and procurement activities. You will also play a key role in driving engineering governance through design reviews and peer reviews, while providing technical leadership across the project lifecycle. Core duties: You will design platform systems, sub-systems, and equipment, ensuring alignment with programme requirements and engineering standards You will undertake functional design activities, including modelling, analysis , and system performance evaluation You will produce and maintain design documentation, verification and validation evidence, and safety justifications You will support supplier engagement, including specification, qualification, and procurement of components You will collaborate with stakeholders across multidisciplinary project teams to ensure successful delivery You will drive engineering governance through design reviews, peer reviews, and technical oversight Essential skills Degree-level qualification, Chartered Engineer status, or working towards professional accreditation Mechanical engineering background in rotating machinery, components, or fluid dynamics Knowledge of platform-level constraints such as noise, shock, or survivability Experience integrating purification systems with submarine life-support, HVAC, and emergency systems Experience in the design of gas scrubbing, filtration, and environmental control systems (e.g. CO removal, O generation, contaminant management ) within complex , safety-critical environments The Mechanical Engineering team: The Mechanical Engineering team plays a key role in the design and development of submarine systems, delivering innovative solutions across complex and safety-critical environments. As a Principal Mechanical Engineer, you will contribute to system-level design, provide technical leadership , and support the development of advanced air purification and atmosphere monitoring systems, helping to shape the future of submarine capability. 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. 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, supporting 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 be proud of the difference you make. 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.

Job Title: Principal Mechanical Engineer Location: Barrow-in-Furness, Hybrid We offer a range of hybrid and flexible working arrangements - please speak to your recruiter about the options for this particular role. Salary: Circa £55,000 depending on skills and experience 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 will be doing: In this role, you will lead the design and development of mechanical systems for next-generation Royal Navy submarines, with a focus on air purification and atmosphere monitoring systems. You will undertake system-level design, modelling and analysis , and produce design documentation, verification and validation evidence, and safety justifications. Working collaboratively with suppliers and cross-functional teams, you will support specification, qualification, and procurement activities. You will also play a key role in driving engineering governance through design reviews and peer reviews, while providing technical leadership across the project lifecycle. Core duties: You will design platform systems, sub-systems, and equipment, ensuring alignment with programme requirements and engineering standards You will undertake functional design activities, including modelling, analysis , and system performance evaluation You will produce and maintain design documentation, verification and validation evidence, and safety justifications You will support supplier engagement, including specification, qualification, and procurement of components You will collaborate with stakeholders across multidisciplinary project teams to ensure successful delivery You will drive engineering governance through design reviews, peer reviews, and technical oversight Essential skills Degree-level qualification, Chartered Engineer status, or working towards professional accreditation Mechanical engineering background in rotating machinery, components, or fluid dynamics Knowledge of platform-level constraints such as noise, shock, or survivability Experience integrating purification systems with submarine life-support, HVAC, and emergency systems Experience in the design of gas scrubbing, filtration, and environmental control systems (e.g. CO removal, O generation, contaminant management ) within complex , safety-critical environments The Mechanical Engineering team: The Mechanical Engineering team plays a key role in the design and development of submarine systems, delivering innovative solutions across complex and safety-critical environments. As a Principal Mechanical Engineer, you will contribute to system-level design, provide technical leadership , and support the development of advanced air purification and atmosphere monitoring systems, helping to shape the future of submarine capability. 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. 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, supporting 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 be proud of the difference you make. 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.

Job Title: Principal Mechanical Engineer Location: Barrow-in-Furness, Hybrid We offer a range of hybrid and flexible working arrangements - please speak to your recruiter about the options for this particular role. Salary: Circa £55,000 depending on skills and experience 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 will be doing: In this role, you will lead the design and development of mechanical systems for next-generation Royal Navy submarines, with a focus on air purification and atmosphere monitoring systems. You will undertake system-level design, modelling and analysis , and produce design documentation, verification and validation evidence, and safety justifications. Working collaboratively with suppliers and cross-functional teams, you will support specification, qualification, and procurement activities. You will also play a key role in driving engineering governance through design reviews and peer reviews, while providing technical leadership across the project lifecycle. Core duties: You will design platform systems, sub-systems, and equipment, ensuring alignment with programme requirements and engineering standards You will undertake functional design activities, including modelling, analysis , and system performance evaluation You will produce and maintain design documentation, verification and validation evidence, and safety justifications You will support supplier engagement, including specification, qualification, and procurement of components You will collaborate with stakeholders across multidisciplinary project teams to ensure successful delivery You will drive engineering governance through design reviews, peer reviews, and technical oversight Essential skills Degree-level qualification, Chartered Engineer status, or working towards professional accreditation Mechanical engineering background in rotating machinery, components, or fluid dynamics Knowledge of platform-level constraints such as noise, shock, or survivability Experience integrating purification systems with submarine life-support, HVAC, and emergency systems Experience in the design of gas scrubbing, filtration, and environmental control systems (e.g. CO removal, O generation, contaminant management ) within complex , safety-critical environments The Mechanical Engineering team: The Mechanical Engineering team plays a key role in the design and development of submarine systems, delivering innovative solutions across complex and safety-critical environments. As a Principal Mechanical Engineer, you will contribute to system-level design, provide technical leadership , and support the development of advanced air purification and atmosphere monitoring systems, helping to shape the future of submarine capability. 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. 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, supporting 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 be proud of the difference you make. 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.

Job Title: Principal Mechanical Engineer Location: Barrow-in-Furness, Hybrid We offer a range of hybrid and flexible working arrangements - please speak to your recruiter about the options for this particular role. Salary: Circa £55,000 depending on skills and experience 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 will be doing: In this role, you will lead the design and development of mechanical systems for next-generation Royal Navy submarines, with a focus on air purification and atmosphere monitoring systems. You will undertake system-level design, modelling and analysis , and produce design documentation, verification and validation evidence, and safety justifications. Working collaboratively with suppliers and cross-functional teams, you will support specification, qualification, and procurement activities. You will also play a key role in driving engineering governance through design reviews and peer reviews, while providing technical leadership across the project lifecycle. Core duties: You will design platform systems, sub-systems, and equipment, ensuring alignment with programme requirements and engineering standards You will undertake functional design activities, including modelling, analysis , and system performance evaluation You will produce and maintain design documentation, verification and validation evidence, and safety justifications You will support supplier engagement, including specification, qualification, and procurement of components You will collaborate with stakeholders across multidisciplinary project teams to ensure successful delivery You will drive engineering governance through design reviews, peer reviews, and technical oversight Essential skills Degree-level qualification, Chartered Engineer status, or working towards professional accreditation Mechanical engineering background in rotating machinery, components, or fluid dynamics Knowledge of platform-level constraints such as noise, shock, or survivability Experience integrating purification systems with submarine life-support, HVAC, and emergency systems Experience in the design of gas scrubbing, filtration, and environmental control systems (e.g. CO removal, O generation, contaminant management ) within complex , safety-critical environments The Mechanical Engineering team: The Mechanical Engineering team plays a key role in the design and development of submarine systems, delivering innovative solutions across complex and safety-critical environments. As a Principal Mechanical Engineer, you will contribute to system-level design, provide technical leadership , and support the development of advanced air purification and atmosphere monitoring systems, helping to shape the future of submarine capability. 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. 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, supporting 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 be proud of the difference you make. 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.