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Job Title: Principal Software Engineer Location: Great Baddow - We offer flexible working arrangements - Part time & accruing hours available. Please let us know if you would like to discuss these options Salary: Up to £75,900 (dependent on skills and experience) What you'll be doing: Derive and maintain a set of software requirements from a baseline set of systems requirements Produce and maintain a software design to meet a set of software requirements Use a software design to produce a deliverable software solution Undertake peer reviews or checking/verification of peers' solutions across Maritime Services Undertake technical reviews, verify and authorise software engineering designs Act as an Engineering technical lead for a software solution at a sub-system level Maintain a software solution to address reported defects and/or add new functionality Support the development of individuals and teams to enhance skills and competencies Produce or assist in the creation of software estimates for sub-systems Your skills and experiences: Good experience of using at least one high level programming language Considerable experience of using a high-level design methodology - knowledge of UML Strong experience of all aspects of the software lifecycle and good knowledge of software lifecycle models (e.g. Waterfall, Agile) Have a BEng/BSc in Computer Science or other relevant Engineering or Numerate subject (technology, engineering or science related discipline) Have good knowledge of appropriate software standards (e.g. ISO/IEC/IEE 12207) Knowledge of Ada95 Have a CEng or equivalent level of capability or working towards CEng status Have a comprehensive understanding of configuration management and experience of a configuration management tool An understanding of model-based techniques is advantageous 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 Sampson Radar Software team: The Sampson Radar Software team is a 30 plus personnel group that provides support and capability upgrades to the Royal Navy and their products. This role will deliver software products to the customer as part of a team delivering enhancements over the next 10 years, as well as providing ongoing support to existing products. You will have the opportunity to develop and enhance your skills and knowledge, with the potential to lead into more senior positions within a global business 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 25th November 2025

Job Title: Principal Software Engineer Location: Isle of Wight - Cowes - We offer flexible working arrangements - Part time & accruing hours available. Please let us know if you would like to discuss these options Salary: Up to £75,900 (dependent on skills and experience) What you'll be doing: Derive and maintain a set of software requirements from a baseline set of systems requirements Produce and maintain a software design to meet a set of software requirements Use a software design to produce a deliverable software solution Undertake peer reviews or checking/verification of peers' solutions across Maritime Services Undertake technical reviews, verify and authorise software engineering designs Act as an Engineering technical lead for a software solution at a sub-system level Maintain a software solution to address reported defects and/or add new functionality Support the development of individuals and teams to enhance skills and competencies Produce or assist in the creation of software estimates for sub-systems Your skills and experiences: Good experience of using at least one high level programming language Considerable experience of using a high-level design methodology - knowledge of UML Strong experience of all aspects of the software lifecycle and good knowledge of software lifecycle models (e.g. Waterfall, Agile) Have a BEng/BSc in Computer Science or other relevant Engineering or Numerate subject (technology, engineering or science related discipline) Have good knowledge of appropriate software standards (e.g. ISO/IEC/IEE 12207) Knowledge of Ada95 Have a CEng or equivalent level of capability or working towards CEng status Have a comprehensive understanding of configuration management and experience of a configuration management tool An understanding of model-based techniques is advantageous 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 Sampson Radar Software team: The Sampson Radar Software team is a 30 plus personnel group that provides support and capability upgrades to the Royal Navy and their products. This role will deliver software products to the customer as part of a team delivering enhancements over the next 10 years, as well as providing ongoing support to existing products. You will have the opportunity to develop and enhance your skills and knowledge, with the potential to lead into more senior positions within a global business 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 25th November 2025

Looking for a role where your work genuinely matters? This is your chance to join a close-knit engineering team building software that powers world-class scientific instruments. These systems help researchers push the boundaries of physics and materials science and you'll play a key part in making that happen. If you enjoy solving complex problems, collaborating across disciplines, and want to see your code make a real impact, this could be the perfect fit. What you'll do 🛠️ Own the lifecycle: Design, develop, and maintain software for precision instruments. 50% coding, 25% documentation, 25% coordination. Build clean solutions: Write modern C++ and Python in a Linux environment, delivering robust, maintainable code. Collaborate widely: Work with engineers, technicians, manufacturing teams, and scientists to turn business requirements into technical solutions. Hardware integration: Interface with programmable instruments and ensure smooth hardware/software interaction. Test and validate: Create and run unit and integration tests to guarantee reliability. Lead by influence: Mentor junior engineers and contribute technical input during design reviews. What you'll bring 🧠 Strong experience in C++ and Python for complex systems. Solid Linux development background. Proven ability to deliver maintainable, high-performance software. Degree in Computer Science, Engineering, Physics, or equivalent practical experience. Excellent communication skills and the ability to work across multiple teams. Strong experience in translating business requirements into technical solutions. Working arrangement 🧭 Hybrid: 3 days on-site in Oxford, with early finish Fridays (1pm). Expect hands-on collaboration in the lab for hardware integration and testing. Salary & Benefits 🎁 Up to £68,000 plus bonus scheme. 25 days annual leave + bank holidays. Pension contribution and comprehensive benefits package. Opportunities for career development in a growing, technology-led business. 📩 Apply now or get in touch for a confidential chat about the role. To find out more about Computer Futures please visit Computer Futures, a trading division of SThree Partnership LLP is acting as an Employment Business in relation to this vacancy | Registered office | 8 Bishopsgate, London, EC2N 4BQ, United Kingdom | Partnership Number | OC387148 England and Wales

Job Title: Principal Software Assurance Engineer Location: Barrow-In-Furness, Filton, Frimley, Broad Oak, Brough or Weymouth. 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: Work with our customer to agree an acceptable approach to risk Plan and carry out software assurance activities including reviews of plans, processes, witnessing testing, inspections and auditing Review software plans, documentation and software aspects of system level plans and documents to provide timely and meaningful feedback Engaging with System Designers, Software Developers and other engineering disciplines in the design process to ensure that software meets requirements Document the level of risk, provide evidence and reporting for Senior Management Work with a range of stakeholders at all levels to resolve non-conformances and programme risks Your skills and experiences: Essential: Familiarity with various software types, including programmable electronics, is beneficial, though in-depth expertise in all areas is not required. A strong grasp of software lifecycle principles and their application across different software types is essential Understanding of the systems engineering lifecycle and its relationship to software development Logical thinking and problem-solving skills, with the ability to find practical solutions and align stakeholders with the resolution Desirable: Experience of Software Assurance methods and processes, including audit and review Understanding of the application of software engineering, security, quality and safety standards Ability to understand strategic direction and tailor actions to support this 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 team: This is a growing role within our business and industry with significant potential for development and further growth. We expect the candidate to quickly develop an understanding of the development, use and control of software in our complex and unique application. Being actively involved in the decision making and problem resolution for some of the most critical aspects of our design. This opportunity offers a uniquely broad view of the SSNA programme, business and customer organisations which offers significant development both technically and personally. We offer relocation support packages across all Submarines roles, subject to meeting eligibility criteria. Why BAE Systems? 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: 12th 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-SC1 #LI-Hybrid

Job Title: Principal Software Assurance Engineer Location: Barrow-In-Furness, Filton, Frimley, Broad Oak, Brough or Weymouth. 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: Work with our customer to agree an acceptable approach to risk Plan and carry out software assurance activities including reviews of plans, processes, witnessing testing, inspections and auditing Review software plans, documentation and software aspects of system level plans and documents to provide timely and meaningful feedback Engaging with System Designers, Software Developers and other engineering disciplines in the design process to ensure that software meets requirements Document the level of risk, provide evidence and reporting for Senior Management Work with a range of stakeholders at all levels to resolve non-conformances and programme risks Your skills and experiences: Essential: Familiarity with various software types, including programmable electronics, is beneficial, though in-depth expertise in all areas is not required. A strong grasp of software lifecycle principles and their application across different software types is essential Understanding of the systems engineering lifecycle and its relationship to software development Logical thinking and problem-solving skills, with the ability to find practical solutions and align stakeholders with the resolution Desirable: Experience of Software Assurance methods and processes, including audit and review Understanding of the application of software engineering, security, quality and safety standards Ability to understand strategic direction and tailor actions to support this 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 team: This is a growing role within our business and industry with significant potential for development and further growth. We expect the candidate to quickly develop an understanding of the development, use and control of software in our complex and unique application. Being actively involved in the decision making and problem resolution for some of the most critical aspects of our design. This opportunity offers a uniquely broad view of the SSNA programme, business and customer organisations which offers significant development both technically and personally. We offer relocation support packages across all Submarines roles, subject to meeting eligibility criteria. Why BAE Systems? 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: 18th Novemnber 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-SC1 #LI-Hybrid

Job Title: Principal Systems Engineer - Software/Simulation Location: Portsmouth - Broad Oak - 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 £75,900 (dependent on skills and experience) What you'll be doing: Provide hands-on technical leadership with a team of systems and software engineers, and directly support the product System Design Authority Apply the principles of Systems Engineering to develop software-based Simulation Systems across the full engineering lifecycle Undertake Simulation Systems equipment design, network design and software design Lead requirement decomposition and manage specifications using tools like IBM DOORS Next Direct architectural modelling and interface definitions in tools such as CATIA Magic (Cameo) Drive system integration and define acceptance strategies for software-based systems Lead technical reviews and ensure compliance with customer, legislative & business requirements Your skills and experiences: Demonstrable experience of the application of Systems Engineering for software-based products Expertise in Systems Engineering and Software integration lifecycle principles (ISO 15288 and 12207) Strong background in requirements management (e.g., IBM DOORS Next - desirable) Familiarity with engineering lifecycle models (Waterfall & Agile) and tools (e.g. JIRA) Background in software development and integration Technical leadership and ability to guide teams across disciplines to shape design solutions 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. MIMESIS Product team: You will join our Simulation and Training sector at Broad Oak Works Portsmouth, part of BAE Systems Maritime and Land Defence Solutions, working on our MIMESIS product. MIMESIS provides a battlespace simulation of the maritime world; from terrain and seabed, to weather and underwater acoustics, accurately modelling the movement and behaviour of ships, submarines and other platforms, and digitally replicating their unique capabilities (sonars, radars, weapons). As a System Technical Lead within the MIMESIS team, you will have technical responsibility for the design and development of new modules/content for the product, reviewing and approving lower level documentation. You will also provide technical guidance to the engineering team, working closely with System Design Authority, to develop and support MIMESIS for our customers. This is a unique opportunity to join a growing team of approximately 30 systems and software engineers, working to shape the next generation of maritime simulation through the adoption of new user interface capabilities such as AR/XR and leveraging the capabilities of emerging technologies such as AI. 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 1st December 2025

Job Title: Principal Software Assurance Engineer Location: Barrow-In-Furness, Filton, Frimley, Broad Oak, Brough or Weymouth. 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: Work with our customer to agree an acceptable approach to risk Plan and carry out software assurance activities including reviews of plans, processes, witnessing testing, inspections and auditing Review software plans, documentation and software aspects of system level plans and documents to provide timely and meaningful feedback Engaging with System Designers, Software Developers and other engineering disciplines in the design process to ensure that software meets requirements Document the level of risk, provide evidence and reporting for Senior Management Work with a range of stakeholders at all levels to resolve non-conformances and programme risks Your skills and experiences: Essential: Familiarity with various software types, including programmable electronics, is beneficial, though in-depth expertise in all areas is not required. A strong grasp of software lifecycle principles and their application across different software types is essential Understanding of the systems engineering lifecycle and its relationship to software development Logical thinking and problem-solving skills, with the ability to find practical solutions and align stakeholders with the resolution Desirable: Experience of Software Assurance methods and processes, including audit and review Understanding of the application of software engineering, security, quality and safety standards Ability to understand strategic direction and tailor actions to support this 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 team: This is a growing role within our business and industry with significant potential for development and further growth. We expect the candidate to quickly develop an understanding of the development, use and control of software in our complex and unique application. Being actively involved in the decision making and problem resolution for some of the most critical aspects of our design. This opportunity offers a uniquely broad view of the SSNA programme, business and customer organisations which offers significant development both technically and personally. We offer relocation support packages across all Submarines roles, subject to meeting eligibility criteria. Why BAE Systems? 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: 3rd Novemnber 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-SC1 #LI-Hybrid