Security Control Assessor

Job Description

Leidos is seeking multiple Security Control Assessors to support our assessment team. 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, but light, partial telework may be available at the discretion of our customer and program management. Significant travel may be required - estimated 80% of the time.

Responsibilities:

• Conduct cybersecurity assessments, audits, and inspections for DoD organizations and partners handling DoD information or connecting to the DoDIN. 
• Evaluate systems and Defensive Cyberspace Operations using cyber threat emulation and performance-based testing. 
• Adhere to policies and processes for each assessment type. 
• Support assessment development and execution to ensure security expertise is properly applied. 
• Coordinate logistics, test plans, and scope with the SCA Team Lead. 
• Perform vulnerability assessments, capture results using STIG Viewer or designated tools, and document findings in eMASS. 
• Analyze security gaps and provide mitigation recommendations. 
• Validate cybersecurity controls, TTPs, STIGs, RMF controls, and compliance with DoD policies and guidelines.  
• Provide risk analysis and assessment results for authorization recommendations. 
• Participate in daily assessment reviews, in-briefs, and out-briefs, sharing findings with the SCA-R. 
• If senior staff, mentor and guide personnel by providing technical expertise, best practices, and professional development support to enhance team capabilities and knowledge

Basic Qualifications:

• Active DoD Top Secret clearance with SCI eligibility required
• Current DoD 8570 IAM II or IAT II certification 
• Ability and willingness to travel for assessments as required, up to 80% of the time
• Bachelor's degree (IT-related field preferred) and five (5) years of cybersecurity or network security experience. Additional relevant experience may be considered in lieu of degree.
• Three (3) years of experience in a Certification and Accreditation/A&A role
• Demonstrated experience with STIGs, SRGs, POA&Ms and cybersecurity best practices, as well as relevant tools such as eMASS, STIG Viewer, Nessus, ACAS, SCAP, or HBSS 
• Strong understanding of the RMF process, NIST SP 800- 37, NIST SP 800-53, CNSSI 1253, as well as 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 
• Strong written and verbal communication skills for reporting assessment findings

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

Pay Range:

Pay Range $69,550.00 - $125,725.00

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.