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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Senior Systems Engineer- Software Systems- Defence - **Company:** Positiv Cohort Ltd - **Location:** UK - **Experience:** Expert - **Salary:** £72,800.0 - **Contract:** Permanent contract - **Skills:** Systems Engineering, Configuration Management, Systems Development Life Cycle, Rhapsody, Requirements Management, Software Engineering, Software Requirements Analysis, Software Systems, Subsystems, Systems Architecture - **Published:** September 8, 2026 - **Apply:** https://www.collegerecruiter.com/job/2840622585-senior-systems-engineer-software-systems-defence ## About the Role * Proven experience in requirements management and derivation, ideally within the defence industry * Proficiency with systems engineering tools such as DOORS, DOORS NG, Rhapsody, or similar * Strong understanding of functional design and the ability to flow requirements through system, subsystem, and equipment levels * Excellent communication skills to translate complex technical concepts into clear, customer-friendly language * Demonstrated ability in engineering change control and configuration management * Experience initiating and conducting trade studies and system development activities * Background in developing complex systems, preferably in a defence or aerospace environment * Ability to communicate architectures and technical ideas effectively across all levels of stakeholders * Strong stakeholder management and interpersonal skills * Experience working with product lines and modular system architectures is highly desirable ## Description We are seeking a highly skilled Senior Systems Engineer with a strong focus on software systems to join our dynamic team in the defence sector. This role is pivotal in shaping complex systems that meet diverse customer needs, ensuring robust requirements management, and driving software development aligned with strategic product line goals., * Customer Engagement & Requirements Capture: Collaborate with defence clients to understand, elicit, and refine their operational needs and translate them into clear, actionable system and software requirements. * Requirements Derivation & Flowdown: Develop and manage system, subsystem, and software requirements using industry-standard tools, ensuring traceability and alignment with customer expectations. * Product Line Strategy Support: Contribute to product line development by informing common architecture and reusable software components that serve multiple customer applications. * Change Management: Define and implement controlled processes for managing engineering changes, ensuring system integrity and compliance throughout the lifecycle. * Software Item Ownership: Act as the internal customer for specific software components, guiding their development and integration within the broader system architecture. ## Related Videos - [10M Data Records Lost, Underwater Computing, and Psychedelic Fish - Matthias Geniar](https://www.wearedevelopers.com/videos/1908-10m-data-records-lost-underwater-computing-and-psychedelic-fish-matthias-geniar) - [Rethinking Intelligence: AI, Accessibility, and the Future of Inclusive Work - Artur Ortega](https://www.wearedevelopers.com/videos/1377-rethinking-intelligence-ai-accessibility-and-the-future-of-inclusive-work-artur-ortega) - [Security Pitfalls for Software Engineers](https://www.wearedevelopers.com/videos/726-security-pitfalls-for-software-engineers) - [We (don't) need a software architect!?!](https://www.wearedevelopers.com/videos/663-we-don-t-need-a-software-architect) - [Model Based Systems Engineering in an Agile Product Development Process](https://www.wearedevelopers.com/videos/68-model-based-systems-engineering-in-an-agile-product-development-process) - [Develop on Windows, Deploy on Red Hat Enterprise Linux](https://www.wearedevelopers.com/videos/1600-develop-on-windows-deploy-on-red-hat-enterprise-linux) ## Related Articles - [What is Software Engineering?](https://www.wearedevelopers.com/magazine/289-what-is-software-engineering) - [Is Software Engineering Over-Saturated?](https://www.wearedevelopers.com/magazine/418-is-software-engineering-over-saturated) - [Where To Find Software Engineering Jobs](https://www.wearedevelopers.com/magazine/396-where-to-find-software-engineering-jobs) - [The 12 Best Jobs for Software Engineers](https://www.wearedevelopers.com/magazine/401-the-12-best-jobs-for-software-engineers) - [Résumé-Driven Development: How IT trends affect the job market for software developers](https://www.wearedevelopers.com/magazine/59-resume-driven-development-how-it-trends-affect-the-job-market-for-software-developers) - [How We Built a Worry-Free System That Runs for 10+ Years – And What We’d Do Again](https://www.wearedevelopers.com/magazine/751-how-we-built-a-worry-free-system-that-runs-for-10-years-and-what-we-d-do-again)