Role: Software Security Engineer Location: Hertfordshire Job Type: Full time, Perm, Flexi The role Join a multidisciplinary engineering team working on highly sophisticated defence systems, with strong opportunities for technical and leadership development.You will be the technical authority for software security across defence products, ensuring secure design and delivery throughout the full product lifecycle from concept to in-service support. You will work closely with software and systems teams to embed security into architecture, design, and development, identifying risks and defining practical mitigations. As a Software Security Engineer, you will: Define and guide security requirements across projects Advise teams on secure architecture, design patterns, and coding standards Assess technologies and frameworks from a security perspective Conduct security risk assessments and vulnerability analysis Develop and improve secure development processes and tools Maintain security documentation and produce security reports and metrics As a Software Security Engineer, you will bring: Essential: Experience developing complex software systems in defence, aerospace, automotive, telecoms, or a similar regulated domain Strong knowledge of software security principles, standards, and best practice Experience conducting security assessments and managing technical risk The ability to lead technically, collaborate effectively, and influence design decisions. D