Security Architect NATO Air & Missile Defence Programme LEIDOS

In this role, you will be responsible for designing and validating the security architecture of a data-centric, cloud-based solution supporting NATO missions, fully aligned with NATO DaSA and DCRA.

Key Responsibilities

• Develop security architecture views using MBSE tools (e.g. Cameo, MagicDraw, Sparx EA) in accordance with NAF v4
• Define Zero Trust enforcement models and ICAM solutions for federated, multi-domain cloud environments
• Produce accreditation documentation (SSAD, Security Target, SecOPs, ST&E) and engage directly with NATO Security Accreditation Authorities
• Ensure traceability of security requirements from operational concepts through to system components and controls

Required Qualifications & Experience

• Active NATO SECRET clearance
• Minimum 5 years of experience in defence security architecture, cloud security, or classified environments
• Strong knowledge of NIST 800-207, NIST 800-53, ISO 27001, and NATO INFOSEC frameworks
• Experience with MBSE tools, SysML/UML, and frameworks such as NAF, DoDAF, or UAF
• CompTIA Security and a Bachelor’s degree in Cybersecurity or a related field

Preferred Qualifications

• CISSP, CCSP, or equivalent certification
• Proven experience with NATO accreditation processes for classified systems
• Familiarity with NATO Data Strategy (DaSA) and DCRA