Overview:A leading technology organisation operating in the defence and public safety sectors is seeking a skilled Senior Software Engineer to join its expanding software engineering function. This company delivers mission-critical solutions used by emergency services, law enforcement, and border control teams. With strong recent growth and product innovation, they are investing further in their UK-based development capability. About the Role:We''re looking for a technically strong, detail-oriented, and collaborative Senior Software Engineer with a broad background in both application and embedded development. You''ll play a key role in the full lifecycle of development, including system integration, performance optimisation, and process automation. Key Responsibilities:Lead the development of complex features and project modulesCollaborate across teams, including with external stakeholdersSupport the software manager in planning, estimation, and requirements gatheringDesign and integrate software with electronic systems and hardwareBuild and maintain CI/CD pipelines (e.g., Jenkins, GitLab)Monitor system performance and troubleshoot technical issuesMentor junior engineers and manage sprint boards Essential Skills and Experience:5+ years in application and firmware/embedded software development (C/C++, Python, Rust)Strong hardware/software integration experienceExperience with internet and application layer protocols, including security standardsFamiliarity with both Linux an