Job Description Our client, a leading organisation within the national security sector, is seeking an experienced Systems Engineer to play a key role across the Systems Development Lifecycle. This is a unique opportunity to work on highly impactful, mission-critical programmes that contribute directly to national security outcomes.You’ll join a collaborative, forward-thinking engineering environment where innovation, quality, and continuous improvement are at the core of everything they do. Systems Engineer Salary: £90,000 – £100,000 Clearance Required: eDV Location: Cheltenham (Hybrid Working) What You’ll Be Doing Driving Systems Engineering activities across the full V Lifecycle Providing architectural oversight, ensuring robust integration and test strategies Championing engineering best practices and process rigour to improve quality and delivery Applying systems thinking to shape and influence complex customer challenges Supporting delivery across a range of methodologies (Agile, Waterfall, Hybrid) Working closely with multidisciplinary teams to deliver high-assurance solutions Your Skills & Experience Strong understanding of the V Lifecycle Proven experience in architectural design oversight, integration, and testing Ability to implement engineering governance and improve quality standards Systems thinking mindset with the ability to solve complex problems Experience across multiple delivery methodologies Exposure to diverse client domains and relevant standards Key Requirements Ability to manage and influence multiple, challenging stakeholders Confidence engaging with C-suite, business, and technical audiences Strong working knowledge of ISO 15288 and IEC 61508 Experience within high-security or safety-critical environments