Security Control Assessor Representative SCAR

Description

The Leidos Digital Modernization Sector is pro-actively preparing for the potential of an increase in staff needed to fulfill an important mission in support of the Sixteenth Air Force Cyber Forces. Specifically, we are seeking multiple candidates for future Security Control Assessor Representative positions that will be located at Lackland AFB San Antonio TX.

Leidos provides direct support for the Air Force's cyberspace and information warfare capabilities. It enables cyber operations, cyber defense, intelligence, and information security to protect Air Force networks and global missions. As a trusted partner, Leidos aids the Air Force in rapidly converging capabilities, mitigating cyber threats, and generating mission-critical cybersecurity outcomes.

The Security Control Assessor Representative (SCAR) provides expert cybersecurity assessment, RMF documentation support, and accreditation readiness for complex Air Force information systems. This role supports the development, review, and validation of cybersecurity artifacts, ensures compliance with DoD and Air Force security controls, and supports the government Security Control Assessor in achieving and maintaining system authorization. The SCAR performs comprehensive security control assessments, evaluates risk, and provides actionable recommendations to strengthen the program's cybersecurity posture.

• Supports the development, maintenance, and review of RMF cybersecurity documentation, including:
  • System Security Plan (SSP)
  • Cybersecurity Plan
  • Security Assessment Report (SAR)
  • Risk Assessment Reports (RAR)
  • Plan of Actions and Milestone (POA&M)
  • Security Operating Procedures (SOPs) and system operating procedures
• Support all RMF activities to obtain and sustain Authority to Operate (ATO) or Interim Approval to Test (IATT).
• Conduct security control assessments to validate effectiveness and compliance with DoDI instructions, NIST SP 800-53, CNSSI 1253, and AFI 17-101.
• Validate system configurations, architectures, STIG/SRG compliance, and vulnerability management practices.
• Review cybersecurity artifacts for accuracy, completeness, and alignment to system categorization.
• Manage cybersecurity baselines, continuous monitoring, audit remediation, and configuration control for classified and unclassified systems.
• Provide expert recommendations on security architecture, risk mitigation, and prioritization of vulnerabilities based on mission impact.
• Develop and maintain cybersecurity strategies supporting both short-term and long-term program objectives.
• Perform periodic risk assessments and evaluate security posture against evolving threats and compliance mandates.
• Assist government personnel with incident response activities, data sanitization processes, and secure media handling.
• Interface with government independent assessment teams to support assessment and authorization efforts.
• Ensure continuous accountability of hardware, software, and digital artifacts on classified networks.
• Maintain awareness of emerging cybersecurity threats and recommend updates to policies, plans, and procedures.

• Bachelor's degree in Cybersecurity, Computer Science, Information Systems, or related discipline with 4-12+ years of experience.
• Experience may be substituted for education depending on contract requirements.
• 3-5+ years of experience in DoD cybersecurity, RMF, or information assurance.
• Requires an active DoD TS/SCI clearance.
• Hands‑on experience with the RMF lifecycle, including control validation and assessment.
• Experience preparing and maintaining RMF artifacts (SSP, SAR, POA&M, Risk Assessment, Contingency Plans, etc.).
• Working knowledge of NIST SP 800-53, CNSSI 1253, DoDI 8500.01/8510.01, and AFI 17-101.
• Experience interpreting STIGs, SRGs, ACAS/Nessus scan results, and system hardening requirements.
• Ability to assess vulnerabilities, evaluate risk impact, and recommend mitigation strategies.
• Strong written and verbal communication skills, including the ability to brief stakeholders and produce clear technical documentation.
• Ability to perform duties on classified networks and…