Senior Cloud Security Architect for AI & Government

Amentum; Boston (MA); 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) retirement matching

Educational reimbursement

Parental leave

Employee stock purchase plan

Tax-saving options

Disability and life insurance

Pet insurance

Job summary

Amentum seeks a Senior Cloud Security Architect to design, implement, and operate security controls across Microsoft 365, Azure, AWS, and hybrid cloud environments, including GCC High and government workloads. You will lead hands-on engineering, IaC, deployment automation, and risk reduction for AI-enabled services.

You will drive threat modeling, security patterns, and collaboration with risk, compliance, and platform teams to ensure CMMC/NIST alignment and support for government contracts.

Qualifications

• U.S. citizenship required; eight+ years in cloud/security/infrastructure engineering with a relevant degree or equivalent experience.
• Hands-on experience designing, deploying, and troubleshooting controls for cloud identity, network segmentation, data protection, logging, posture management, & workload protection.

Responsibilities

• Design and implement security controls across Microsoft 365, Azure, AWS, and hybrid environments.
• Lead threat modeling and focused design reviews for new services and high-risk use cases.
• Engineer and operate cloud security posture management and workload protection capabilities.
• Integrate cloud security telemetry with enterprise monitoring and support escalated investigations.

Skills

Cloud security

Threat modeling

IaC & automation

Security architecture

Communication

Education

Bachelor's degree in cybersecurity / IT / CS or related field

Tools

Microsoft 365 GCC High

Azure

AWS

Job description

Amentum seeks a Senior Cloud Security Architect to design, implement, and operate security controls across Microsoft 365, Azure, AWS, and hybrid cloud environments, including GCC High and government workloads. You will lead hands-on engineering, IaC, deployment automation, and risk reduction for AI-enabled services.

You will drive threat modeling, security patterns, and collaboration with risk, compliance, and platform teams to ensure CMMC/NIST alignment and support for government contracts.