Senior Cybersecurity SME: DoD RMF, Zero Trust, Cross-Domain

The Stacia Group, LLC; Chantilly (VA); On-site; USD 194,000 - 237,000; Full time

Benefits offered by this job

401(k)

401(k) matching

Dental insurance

Health insurance

Paid time off

Vision insurance

Job summary

The Stacia Group, LLC seeks a highly technical Senior Cybersecurity Subject Matter Expert and Security Control Assessor to support our agency as trusted advisor to the Authorizing Official and CIO. This in-person role secures multi-domain systems with intrinsic security from inception.

Salary starts at $215,000 per year with a benefits package including 401(k) and health, dental, vision, PTO. Ideal candidate brings deep DoD cybersecurity expertise, system integrator background, and proven

Qualifications

• Active TS clearance with SCI and SAP access.
• 12+ years of progressive IT/cybersecurity and A&A experience.
• Hands-on SAP/SCI systems experience across Platform IT and cloud.
• DoD 8140/8570-M IAT III or IAM III baseline cert (CISSP/CISM/GSLC/CASP CE).
• Defense-industry experience with rapid prototyping, test ranges, Platform IT.
• Systems integrator or cybersecurity engineer with enterprise networks/cloud.
• Strong RMF knowledge and security control assessment practices.
• Familiarity with AWS, Azure IL5/IL6, Kubernetes, Docker.
• Experience with ACAS, SCAP, STIG Viewer, Splunk/SIEM, CSPM, eMASS, Xacta.

Responsibilities

• Participate in System Requirements Reviews and Design Reviews to embed security.
• Guide teams in DevSecOps practices, automated security testing, and compliance.
• Perform system-level threat modeling to identify attack paths and mitigations.
• Validate vulnerability scans, STIG results, and pen tests; relate to risk.
• Execute RMF activities and translate gaps into risk decisions for the AO.
• Assess security/risk across Platform IT, hardware, software, networks, satellites.
• Drive DoD Zero Trust pillars across agency portfolios.
• Provide design/evaluation/implementation guidance for Cross Domain Solutions.
• Monitor emerging tech and threats (AI/ML, edge, quantum-resistant crypto).
• Serve as technical bridge between AO, engineering, SMEs, partners, and stakeholders.

Skills

Active TS Clearance

SCI Eligibility

Cross Domain Security

Cloud Security

RMF & CSAM Practices

Threat Modeling

Education

DoD 8570.01-M/IAT III or IAM III cert

CISSP / CISM / GSLC / CASP-CE

Tools

ACAS

SCAP

STIG Viewer

Splunk/SIEM

eMASS

Xacta

Job description

The Stacia Group, LLC seeks a highly technical Senior Cybersecurity Subject Matter Expert and Security Control Assessor to support our agency as trusted advisor to the Authorizing Official and CIO. This in-person role secures multi-domain systems with intrinsic security from inception.

Salary starts at $215,000 per year with a benefits package including 401(k) and health, dental, vision, PTO. Ideal candidate brings deep DoD cybersecurity expertise, system integrator background, and proven