Senior Cloud Security Architect for AI & Gov Cloud

Amentum; Lincoln (NE); On-site; USD 150,000 - 165,000; Full time

Benefits offered by this job

Health, dental, and vision insurance

PTO and holidays

401(k) retirement match

Educational reimbursement

Parental leave

Employee stock purchase plan

Tax-saving options

Disability and life insurance

Pet insurance

Job summary

Amentum's Senior Cloud Security Architect role designs, builds, deploys, and maintains security controls across Microsoft 365 Commercial and GCC High, Azure, AWS, and hybrid environments. You will drive secure AI adoption, build reusable infrastructure-as-code components, and lead threat modeling for high-risk use cases.

The position requires hands-on engineering, collaboration with risk/compliance teams, and a track record of implementing scalable security patterns in complex, regulated

Qualifications

• Strong hands-on knowledge of Microsoft cloud or AWS security capabilities.
• Experience designing, deploying, and troubleshooting controls for cloud identity, network segmentation, data protection, logging, posture management, and workload protection.
• Experience applying cloud security principles to AI or machine-learning services, generative AI applications, enterprise copilots, agents, or comparable automated platforms, including threat modeling and control design.
• Experience using infrastructure as code, source control, scripting, and deployment automation to implement and maintain cloud controls.
• Experience with threat modeling, technical risk assessment, and translating security or regulatory requirements into working technical solutions.

Responsibilities

• Design and implement security controls and reusable patterns across Microsoft 365 Commercial and GCC High, Azure, AWS, and hybrid services, including cloud guardrails, landing zones, workload protections, and virtual desktop environments.
• Design and implement security architectures for generative AI, machine learning, enterprise copilot, and agentic systems, including secure access, data protection, identity, logging, content safety, and human-oversight controls.
• Perform hands-on configuration, testing, troubleshooting, and tuning for complex cloud security implementations and platform integrations.
• Build and maintain reusable infrastructure-as-code components and deployment automation for security policies, controls, and platform onboarding.
• Lead focused design reviews and threat modeling for new services, major changes, and higher-risk use cases, then help implement the approved approach.
• Engineer and administer cloud security posture management and workload protection capabilities, including environment onboarding, policy configuration, security recommendations, coverage, alert integrations, and platform health.
• Lead complex platform changes and escalations while sharing implementation, tuning, and support work with the Cloud Security Engineer.
• Integrate cloud security telemetry with enterprise monitoring and response platforms and support escalated investigations when cloud expertise is needed.
• Partner with Vulnerability Management on exposure prioritization and tracking and work with cloud platform owners on practical remediation approaches.
• Design and validate technical controls that support CMMC and applicable NIST requirements, including NIST SP 800-171 and NIST SP 800-172.

Skills

Cloud security expertise

Threat modeling

Infrastructure as code

Security architecture design

Communication to stakeholders

Education

Bachelor's degree or equivalent in cybersecurity/IT/CS/engineering

Job description

Amentum's Senior Cloud Security Architect role designs, builds, deploys, and maintains security controls across Microsoft 365 Commercial and GCC High, Azure, AWS, and hybrid environments. You will drive secure AI adoption, build reusable infrastructure-as-code components, and lead threat modeling for high-risk use cases.

The position requires hands-on engineering, collaboration with risk/compliance teams, and a track record of implementing scalable security patterns in complex, regulated