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.

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 (FIPS199).
• •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.

Original Posting:

September 30, 2026

For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above.

Pay Range:

Pay Range $87,100.00 - $157,450.00

The Leidos pay range for this job level is a general guideline only and not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.