Information Systems Security Engineer

Description Leidos has a career opportunity for a Information Systems Security Engineer to support the Air Force National Capital Region IT Services program. Leidos Digital Modernization Team provides a diverse portfolio of systems, solutions, and services covering land, sea, air, space, and cyberspace for customers worldwide. Solutions for Defense include enterprise and mission IT, large-scale intelligence systems, command and control, geospatial and data analytics, cybersecurity, logistics, training, and intelligence analysis and operations support. Our team is solving the world’s toughest security challenges for customers with “can’t fail” missions.  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!   POSITION SUMMARY: Assist with scheduling and running vulnerability scans using Tenable SecurityCenter/Nessus (ACAS) in classified and unclassified environments  Review scan results to help identify potential CAT I/II/III findings, false positives, and basic configuration issues. Identify Hardening requirements that still need to be met and apply those Security Techinical Implmentations (STIGs). Act as expert for system admins and Engineers to assit thorough the STIG hardening process.  Support tracking of remediation actions, Plans of Action and Milestones (POA&Ms), and exceptions in accordance with RMF guidance. Follow established procedures to validate DISA STIG checklists and work with team members to ensure secure system configurations  PRIMARY RESPONSIBILITIES: Help prepare basic vulnerability reports, compliance summaries, and metrics to support leadership briefings and inspection readiness (e.g., CCRI/CORA). Assist in maintaining asset groupings, scan zones, and credentialed scanning configurations as directed by senior analysts. Coordinate with Queue Managers, ISSOs, and Engineering teams to support the remediation of high-priority vulnerabilities. Maintain data accuracy within ACAS, including proper tagging and grouping for consistent reporting. BASIC QUALIFICATIONS: Active DoD Secret clearance required. CompTIA Security+ CE or higher DoD 8570 IAT Level II certification must meet 8140 ISSM role qualification. Bachelor's Degree and 4-8 years of cybersecurity or system administration experience, with at least 1 year of direct ACAS or Tenable experience.  Additional years of experience may be considered in lieu of a degree.Working knowledge of DISA STIGs, vulnerability risk levels, and POA&M remediation strategies. Familiarity with NIST SP 800-53, RMF compliance, and Air Force cybersecurity policy (AFMAN 17-130). Strong attention to detail, documentation skills, and the ability to interpret technical vulnerability data.  PREFERRED QUALIFICATIONS: Experience supporting USAF, DISA, or other DoD mission systems. Familiarity with EvaluateSTIG, StigViewer, OpenSCAP, Nessus/ACAS,  Prior involvement in CCRI/CORA preparation or vulnerability remediation campaigns. Ability to communicate risk-based recommendations to both technical and non-technical stakeholders. Understanding of automation tools/scripts (e.g., PowerShell, Nessus APIs) to support scan or report optimization. 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:March 9, 2026For 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 - $157,450.00The 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.About LeidosLeidos is an industry and technology leader serving government and commercial customers with smarter, more efficient digital and mission innovations. Headquartered in Reston, Virginia, with 47,000 global employees, Leidos reported annual revenues of approximately $16.7 billion for the fiscal year ended January 3, 2025. For more information, visit .Pay and BenefitsPay and benefits are fundamental to any career decision. That's why we craft compensation packages that reflect the importance of the work we do for our customers. Employment benefits include competitive compensation, Health and Wellness programs, Income Protection, Paid Leave and Retirement. More details are available at /careers/pay-benefits.Securing Your DataBeware of fake employment opportunities using Leidos’ name. Leidos will never ask you to provide payment-related information during any part of the employment application process (i.e., ask you for money), nor will Leidos ever advance money as part of the hiring process (i.e., send you a check or money order before doing any work). Further, Leidos will only communicate with you through emails that are generated by the automated system – never from free commercial services (e.g., Gmail, Yahoo, Hotmail) or via WhatsApp, Telegram, etc. If you received an email purporting to be from Leidos that asks for payment-related information or any other personal information (e.g., about you or your previous employer), and you are concerned about its legitimacy, please make us aware immediately by emailing us at [email protected] you believe you are the victim of a scam, contact your local law enforcement and report the incident to the U.S. Federal Trade Commission.Commitment to Non-DiscriminationAll qualified applicants will receive consideration for employment without regard to sex, race, ethnicity, age, national origin, citizenship, religion, physical or mental disability, medical condition, genetic information, pregnancy, family structure, marital status, ancestry, domestic partner status, sexual orientation, gender identity or expression, veteran or military status, or any other basis prohibited by law. Leidos will also consider for employment qualified applicants with criminal histories consistent with relevant laws.

Created: 2026-03-10