Senior Cloud Security Architect AI & Gov Cloud

Amentum is seeking a Senior Cloud Security Architect to design, build, and maintain cloud security controls across Microsoft 365 Commercial/GCC High, Azure, AWS, and hybrid environments. The role focuses on secure AI adoption, threat modeling, and scalable automation, with direct involvement in configuration and testing. You will lead security design reviews, implement reusable governance patterns, and work across government and commercial cloud contexts to protect CUI data and ensure compliance