Build and support a culture grounded in Leidos values, beliefs, and expectations, and in the highest standards of ethical and respectful behavior
Plan and document the security of a complex, mission-critical defense network in accordance with the DoD RMF
Plan, document, and obtain authorizations and approvals required by the Government Authorizing Official, including Interim Authorization to Test (IATT), Interim Authorization to Operate (IATO), Authorization to Operate (ATO), Authorization to Connect (ATC), and Interconnection Security Agreements (ISAs)
Perform and review security assessments of computing environments to identify vulnerabilities and non-compliance with cybersecurity standards and regulations, and recommend mitigation strategies
Validate and verify system security requirements definitions and analysis
Analyze findings, prioritize risks, and track remediation to closure
Partner with architects and system developers to identify and implement security functionality that ensures consistent application of security policies and solutions
Assess Sensitive Compartmented Information (SCI) system threats and risks, and develop mitigations throughout the program life cycle
Contribute to security planning, assessment, risk analysis, risk management, certification, and awareness activities for SCI systems and classified network operations
Basic Qualifications
Bachelor’s degree with 4+ years of related experience Additional experience may be considered in lieu of a degree.
US Citizen; Currently possessing an active DoD Secret clearance with ability to upgrade to a TS/SCI clearance upon hire.
DoD 8140-compliant baseline certification appropriate to the work role (e.g., IAT Level II)
Experience applying the NIST Risk Management Framework (RMF) within DoD and Intelligence Community (IC) environments
Experience with Intelligence Community Directive (ICD) 503
Experience with cross-domain or segmented architectures
Experience developing and documenting NIST SP 800-53 security controls
Experience working in a Sensitive Compartmented Information Facility (SCIF) and on classified networks
Excellent written and verbal communication skills, including the demonstrated ability to brief technical and non-technical customers and stakeholders
Ability to collaborate effectively with a dispersed team
Preferred Qualifications
Master’s degree with 2+ years of relevant experience.
Active TS/SCI clearance.
Experience developing and maintaining an authorization Body of Evidence
Experience with eMASS, including eMASSter
Experience with Evaluate-STIG
Experience with Tenable Nessus
Experience with Security Onion for network security monitoring (NSM)
Experience with Jira and Confluence
Understanding of TEMPEST requirements and assessments
Ready to make an impact? Start your next career chapter with Leidos—apply today!
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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
October 23, 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.
