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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Principal Systems Engineer - **Company:** DSTL - **Location:** Salisbury, United Kingdom - **Experience:** Expert - **Salary:** £51,568 - £58,044 - **Contract:** Temporary to permanent - **Skills:** Systems Engineering, Expert Systems, Software Engineering, Software Requirements Analysis, Information Technology - **Published:** November 6, 2026 - **Apply:** https://www.totaljobs.com/job/principal-system-engineer/dstl-job108292191 ## About the Role * Degree in Systems Engineering, Engineering, Software Engineering, Computer Science, Physics, Mathematics or another relevant STEM discipline, or equivalent professional experience. https://dstlgovuk-my.sharepoint.com/personal/glmatthewman_dstl_gov_uk/_layouts/15/Doc.aspx?sourcedoc=%7B1171A27E-5CE9-4C7B-AAED-C10F5F6DB910%7D&file=20260925-Principal_Systems_Engineer_Role_Profile_L6_V1.0-O.docx&action=default&mobileredirect=true, * Providing technical leadership across complex systems engineering projects. * Developing and maturing system-of-systems architectures. * Applying Systems Engineering and Systems Thinking principles within complex technical environments. * Applying systems engineering approaches to the development and assurance of defence or cyber capabilities. * Understanding how software engineering contributes to integrated systems, including hardware and embedded systems., * Experience solving complex, non-routine technical problems and producing clear technical assessments. * Experience applying Systems Engineering principles across the capability lifecycle. * Knowledge of capability development, acquisition or procurement environments. * Experience providing technical leadership within multidisciplinary engineering teams. * Experience assuring technical products and supporting delivery of high-quality engineering outcomes., Relevant STEM-based degree such as Electronic Engineering, Embedded Systems, Computer Science, Physics or Mathematics. Individual with equivalent skills qualifications or experience are also actively encouraged to apply., * Delivering at Pace * Communicating and Influencing * Working Together * Changing and Improving * Leadership ## Description Are you a systems engineering professional who thrives on solving complex technical challenges and turning ambitious concepts into operational capabilities? We are looking for a Principal Systems Engineer to join our team and help transform cutting-edge Defence and Security research into innovative, real-world capabilities. Working at the forefront of cyber and technology development, you will play a key role in shaping complex systems, influencing technical strategy and ensuring solutions meet operational needs. As a senior technical leader, you will work with stakeholders across government, industry, academia and international partners to develop enterprise architectures, define system requirements and provide expert systems engineering guidance throughout the capability lifecycle. You'll lead the resolution of complex technical issues, drive interoperability across systems and ensure solutions remain robust, flexible and sustainable for future needs. This role offers the opportunity to influence strategic decisions, mentor developing engineers and contribute to some of the UK's most important defence and national security challenges. You will work in multidisciplinary teams, helping to bridge the gap between research, engineering and operational delivery while ensuring programmes are delivered safely, securely and effectively. If you enjoy tackling complex problems, providing technical leadership and developing innovative solutions that have real impact, we would love to hear from you. This role is eligible for an additional specialist allowance of £2758 annually subject to meeting extended onboarding requirements. The role may be eligible for additional skills allowances depending on the skills and experience of the applicant., * Translate complex stakeholder requirements into clear system requirements and enterprise architectures. * Lead systems engineering activities across complex programmes and capability development projects. * Provide technical leadership and expert advice to multidisciplinary teams and senior stakeholders. * Develop and mature system and system-of-systems architectures to support strategic objectives. * Define standards, interfaces and open systems approaches that improve interoperability and future flexibility. * Analyse complex technical information and communicate findings, recommendations and risks clearly to a range of audiences. * Identify, assess and mitigate technical risks to ensure successful project delivery and operational effectiveness. * Support capability development activities across the CADMID lifecycle. * Ensure technical products are delivered to the required quality, safety and security standards. * Mentor and develop engineers and technical specialists, sharing knowledge and promoting engineering excellence. * Build strong collaborative relationships with customers, government partners, industry and academia. * Drive continuous improvement in systems engineering practices, tools and methodologies.