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SCA-R Validator

Job in Alexandria, Fairfax County, Virginia, 22301, USA
Listing for: Leidos
Per diem position
Listed on 2026-07-10
Job specializations:
  • IT/Tech
    Cybersecurity
Salary/Wage Range or Industry Benchmark: 107500 USD Yearly USD 107500.00 YEAR
Job Description & How to Apply Below

SCA-R Validator

Leidos is seeking multiple SCA-R Validators to assess programs' security posture and develop reports and recommendations for improvement. These positions can be based out of any of our three locations - Alexandria, VA, Fort Meade, MD, or Chambersburg, PA. These positions are primarily on-site. Some travel may be required to support our assessment team, up to 50% of the time. Per diem is provided while on travel.

Maximum starting salary for this position is $107,500.

Responsibilities:
  • Use government-assigned tools to perform weekly updates, maintain records, and complete tasks.
  • Coordinate with ISSMs and PMOs to understand mission and business functions, security architecture, deployment locations, and planned and projected architectural and functional changes of assigned systems.
  • Conduct cybersecurity assessments, risk analyses (operational and technical) and authorization tasks across all RMF steps using approved RE5 tools and processes.
  • Verify authorization boundaries and categorize systems (FIPS
    199).
  • Identify data classifications and conduct system-level risk assessments.
  • Track system changes, assess impacts, and report updates to the AO.
  • Evaluate authorization and change requests, web filtering, firewall exceptions, ports/protocols, cybersecurity risks, STIG/SRG compliance, and on-site security.
  • Lead assessment visits, conduct briefings, and ensure proper documentation and reporting.
  • Attend required government training and meetings to stay updated on process changes.
  • Maintain access and proficiency in required government databases and cybersecurity tools.
  • Assess threats, vulnerabilities and cybersecurity risk for systems and compile findings into timely authorization packages to determine countermeasures and residual risk.
  • Support assigned systems throughout their lifecycle in alignment with FISMA requirements.
  • Submit weekly activity reports summarizing tasks, tracking IDs, and key updates.
Basic Qualifications:
  • Bachelor's degree (IT-related field preferred) and eight (8) years of cybersecurity or network security experience. Additional relevant experience may be considered in lieu of degree.
  • Active DoD Top Secret clearance with SCI eligibility required
  • Current DoD 8570 IAM II or IAT II certification
  • Five (5) years of experience in a Certification and Accreditation/A&A role
  • Demonstrated experience with STIGs (Security Technical Implementation Guides), Security Requirement Guides (SRGs), Plan of Action and Milestones (POA&Ms) and cybersecurity best practices
  • Advanced understanding of the RMF process, NIST SP 800- 37, NIST SP 800-53, CNSSI 1253
  • Demonstratable experience in risk analysis, control validation, and as a Security Control Assessor Representative (SCA-R).
  • Demonstrated experience with relevant tools such as eMASS, STIG Viewer, Nessus, ACAS, SCAP, or HBSS
  • Advanced understanding of key technologies areas/domain such as:
    Network, Mobility, Windows, UNIX, Cloud Environments and Cloud Native Tools/Services, Host Based Security System (HBSS)/Endpoint Security Solutions (ESS), Databases, Applications
  • Customer service skills
  • Ability and willingness to travel for assessments as required

If you're looking for comfort, keep scrolling. At Leidos, we outthink, outbuild, and outpace the status quo — because the mission demands it. We're not hiring followers. We're recruiting the ones who disrupt, provoke, and refuse to fail. Step 10 is ancient history. We're already at step 30 — and moving faster than anyone else dares.

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