Security Control Assessor Representative SCAR

Leidos Holdings Inc.•San Antonio, TX

32d•$85,150 - $153,925•Onsite

About The Position

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.

Requirements

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 handle sensitive information appropriately.
DoD 8570/8140 Baseline Certification: IAM-II (e.g., CAP, CASP+, CISM, GSLC), or IAT-II/IAT-III equivalent depending on system requirements.

Nice To Haves

Prior experience as a SCAR, SCA, ISSO, ISSM, or RMF Assessor for DoD or Air Force programs.
Experience with eMASS, Xacta, or other RMF automation tools.
Knowledge of cybersecurity architecture, enterprise networks, virtualization, and system lifecycle management.
Experience supporting or validating controls on classified systems at various impact levels (IL4-IL6, JWICS/SIPR/NIPR).
Hands-on experience performing Security Test & Evaluation (ST&E).
Experience analyzing audit logs, monitoring tools, and cybersecurity alerts.
Familiarity with Zero Trust principles, DoD cloud security models, and current cyber threat landscapes.
Advanced cybersecurity certifications (e.g., CISSP, CCSP, CEH, GSNA, GSCP, GCIH).
Experience briefing senior leaders or government authorization officials.

Responsibilities

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&Ms) Standard 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 DoD_instrsturctions, 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.