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Dice is the leading career destination for tech experts at every stage of their careers. Our client, Leidos, is seeking the following. Apply via Dice today! Leidos has a career opportunity for a Security Engineer to support the Air Force National Capital Region IT Services program. The AFNCR IT Services program provides support services for information systems for Headquarters Air Force (HAF), Air Force District of Washington (AFDW), Office of the Secretary of Defense (OSD), Joint Chiefs of Staff, and other Air Force activities within the AFNCR, missions to include the Pentagon, Joint Base Andrews (JBA), Joint Base Anacostia-Bolling (JBAB), and other locations, leased spaces, and alternate sites. The major support areas required are IT Operations and Maintenance; Plans, Projects, and Engineering (PP&E); and National Military Command Center (NMCC). The senior leaders and national defense missions that are supported require that the AFNCR operations never fail, resulting in a fast-paced, challenging, but also rewarding environment. If this sounds like the kind of environment where you can thrive, keep reading! Delivering enterprise IT, digital modernization and cyber capabilities to meet critical Air Force, Space Force and Defense Agency operational and mission objectives. To explore and learn more, click here! Are you ready to make an impact? Begin your journey of a flourishing and meaningful career, share your resume with us today! POSITION SUMMARY: Leidos is seeking an experienced Security Engineer. The ideal candidate will bring deep knowledge and hands-on experience in system hardening using DISA STIGs, DoD cybersecurity compliance tools, and familiarity with cyber readiness assessments. You will support mission-critical DoD infrastructure by ensuring hardened, secure systems aligned with DISA and DoD security standards. Primary Responsibilities:

• Lead efforts in system and application hardening using DISA Security Technical Implementation Guides (STIGs).
• Utilize tools such as STIG Viewer, SCAP Compliance Checker (SCC), and resources on to assess and remediate system vulnerabilities.
• Analyze vulnerability scan data from ACAS (Assured Compliance Assessment Solution) and translate findings into actionable remediation strategies.
• Ensure compliance with DoD Information Assurance policies and support risk assessments.
• Prepare and maintain security documentation, including System Security Plans (SSPs) and Plan of Action and Milestones (POA&Ms).
• Support and respond to Cybersecurity Inspections, Command Cyber Readiness Inspections (CCRI), or Cyber Operational Readiness Assessments (CORA).
• Collaborate with systems engineers, network engineers, and other security professionals to develop secure architectures and implement security controls across systems and platforms.
• Provide recommendations to improve the security posture of existing and new systems.
• Experience with Powershell and Evaluate STIG.

Basic Qualifications:

• Bachelor's degree in Computer Science, Cybersecurity, Information Assurance, or related discipline and 8+ years of relevant experience. Additional experience may be considered in lieu of a degree.
• Active DoD Secret clearance (Top Secret preferred).
• IAT Level II or III certification (e.g., Security+, CISSP, CASP+, or equivalent).

Demonstrated experience with:

• Applying STIGs and system hardening techniques for Windows and Linux systems.
• STIG Viewer, SCC, and tools.
• ACAS/Nessus scan analysis and reporting.
• Understanding of RMF (Risk Management Framework) and NIST 800-53/800-171 controls.

Preferred Qualifications:

• Experience supporting CCRI, CORA, or other Cyber Readiness Assessments.
• Familiarity with DoD mission systems and infrastructure.
• Working knowledge of HBSS, SIEM tools, and network security monitoring.
• Experience writing SSPs, POA&Ms, and supporting ATO (Authorization to Operate) processes.
• Experience with Automation of system hardening via GPO, PowerShell, Ansible, Satellite.

Original Posting: June 5, 2025 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 $104,650.00 - $189,175.00 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. Seniority level

• Seniority level Mid-Senior level

Employment type

• Employment type Full-time

Job function

• Job function Information Technology
• Industries Software Development

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