Security Engineer (Contract) – Outside IR35- Cardiff- 6 months £595 p/day We’re looking for an experienced Security Engineer to join a major defence project. This is a contract role, evaluated as Outside IR35. Key Responsibilities: * Develop and deliver security architecture and documentation for complex systems. * Provide security guidance across engineering decisions and ensure compliance with standards. * Support accreditation processes and maintain security assurance throughout the project lifecycle. * Collaborate with design and test teams to ensure secure implementation and integration. * Hands-on involvement in Model-Based Systems Engineering and open architecture development. Ideal Candidate: * Strong defence sector background with experience in security frameworks such as ISO27001, IS1&2, NIST SP 800-53, and others. * Proven track record of delivering security designs through accreditation into operational support. * Familiarity with large-scale, complex systems and layered security architectures. Additional Info: * Must be eligible for UK Security Clearance. * Right-to-work checks required prior to engagement...