Senior Cloud Security Architect: AI & Gov Cloud

Amentum; Annapolis (MD); On-site; USD 150,000 - 165,000; Full time

Benefits offered by this job

Health, dental, and vision insurance

Paid time off and holidays

401(k) matching

Educational reimbursement

Parental leave

Employee stock purchase plan

Tax-saving options

Disability and life insurance

Pet insurance

Job summary

Amentum is seeking a Senior Cloud Security Architect to design, build, deploy, and maintain security controls across Microsoft 365 GCC High, Azure, AWS, and hybrid environments. This is a hands-on senior engineering role with governance and risk responsibilities.

You will lead threat modeling, develop reusable IaC patterns, and enable secure AI adoption across commercial, government, and CUI workloads, coordinating with risk, compliance, and platform teams.

Qualifications

• U.S. citizenship required.
• 8+ years in cloud, security, systems, or infrastructure with 5+ years in design/implementation.
• Experience with Microsoft 365, Azure, AWS, and hybrid services.
• Experience securing AI/retrieval systems; threat modeling.
• IaC, source control, scripting, deployment automation.
• Knowledge of security controls for cloud identity, data protection, logging, posture management.

Responsibilities

• Design and implement security controls across MS365 GCC High, Azure, AWS, and hybrid environments.
• Develop security patterns for generative AI, enterprise copilots, and agentic systems.
• Perform hands-on configuration, testing, and troubleshooting.
• Lead threat modeling and design reviews for new services and high-risk use cases.
• Operate cloud security posture management and workload protection.
• Coordinate with risk/compliance for assessments and secure AI adoption.
• Collaborate with cross-functional teams to integrate security requirements.

Skills

Cloud security knowledge

Explain decisions

Threat modeling

IaC experience

AI/ML security

Education

Bachelor’s degree in cybersecurity/IT/CS/engineering

Job description

Amentum is seeking a Senior Cloud Security Architect to design, build, deploy, and maintain security controls across Microsoft 365 GCC High, Azure, AWS, and hybrid environments. This is a hands-on senior engineering role with governance and risk responsibilities.

You will lead threat modeling, develop reusable IaC patterns, and enable secure AI adoption across commercial, government, and CUI workloads, coordinating with risk, compliance, and platform teams.