Overview An established engineering organisation delivering secure, mission-critical technology solutions is seeking a Principal Software Engineering Manager to provide technical leadership across a portfolio of complex development programmes. This role combines strategic software leadership with hands-on technical oversight, supporting the delivery of embedded and application software solutions within highly regulated environments. You will work across multiple engineering disciplines, helping to shape software architecture, development practices, tooling, and technical direction while supporting a team of experienced software engineers. Key Responsibilities Provide technical leadership across multiple software projects, ensuring robust architectures, effective reuse of software components, and adoption of appropriate development tools and methodologies. Support software leads and project teams in defining software requirements, architecture, design approaches, and implementation strategies. Drive consistency in software engineering standards, processes, and best practice across development teams. Work closely with systems, hardware and firmware engineers to ensure integrated and coherent technical solutions. Support project planning activities, helping teams deliver value to customers through well-structured development roadmaps. Review software designs, architectures, and implementation approaches, providing guidance and resolving technical challenges where required. Prom