Senior Cloud Security Architect for AI & Gov Cloud

Amentum; Hagåtña (GU); On-site; USD 150,000 - 165,000; Full time

Benefits offered by this job

Health insurance

401(k) matching

Paid time off

Educational reimbursement

Job summary

Amentum is seeking a Senior Cloud Security Architect to design, implement, and operate security controls across Microsoft 365 Commercial and GCC High, Azure, AWS, and hybrid environments in the United States. You will lead hands‑on configuration, threat modeling, and deployment automation to enable secure AI and cloud services.

Responsibilities include designing reusable patterns, integrating posture management, and guiding risk assessments while collaborating with cross‑functional teams to

Qualifications

• U.S. citizenship required.
• Typically eight or more years of relevant experience in cloud, security, systems or infrastructure engineering.
• Bachelor's degree in cybersecurity, information technology, computer science, engineering, or related field, or an equivalent combination of education and experience.
• Hands-on knowledge of Microsoft 365, Azure, AWS, and hybrid services.
• Experience applying cloud security to AI or ML services, including threat modeling and control design.

Responsibilities

• Design and implement security controls across cloud environments (MS 365, Azure, AWS, GCC High).
• Lead security patterns for AI/ML, copilots, and agentic systems; manage data protection and access.
• Perform hands-on configuration, testing, and troubleshooting of cloud security.
• Develop reusable IaC components for security policies and onboarding.
• Lead threat modeling and design reviews for new services and high-risk use cases.
• Collaborate with Security Operations and Vulnerability teams for remediation.

Skills

Cloud security engineering

Threat modeling

Infrastructure as code

Azure security

AWS security

Security controls

AI security

Governance & compliance

Education

Bachelor's degree in cybersecurity or related field

Job description

Amentum is seeking a Senior Cloud Security Architect to design, implement, and operate security controls across Microsoft 365 Commercial and GCC High, Azure, AWS, and hybrid environments in the United States. You will lead hands‑on configuration, threat modeling, and deployment automation to enable secure AI and cloud services.

Responsibilities include designing reusable patterns, integrating posture management, and guiding risk assessments while collaborating with cross‑functional teams to