Job Title

Description Leidos is an innovation company addressing some of the world’s most complex challenges in national security and health. With 47,000 employees worldwide, we partner with our customers to deliver smarter, technology-forward solutions.We are seeking an Information Assurance Administrator to support our Defense Systems Sector.In this role, you’ll support the secure and compliant operation of classified and unclassified systems. You’ll manage ATO documentation, perform system audits, conduct vulnerability scans, and support engineers and local users with system administration tasks. You will work closely with U.S. Government IWS6 customers to support secure classified programs, maintain continuity of operations, and ensure mission readiness.Primary ResponsibilitiesAdminister Windows and Linux systemsBuild/maintain Linux/Windows workstations and servers to DoD STIG standardsConfigure switches and firewalls; perform basic network troubleshootingConduct vulnerability assessments (SCAP, ACAS/Nessus, DISA STIGs)Perform periodic maintenance including OS patching and virus definition updatesSupport ticket requests, user account management, password resets, and account unlocksResolve file-level permission issues across Linux and Windows environmentsMaintain system security and recovery processes in accordance with RMF and DoD policiesInstall hardware and software as requiredBasic QualificationsActive DoD Secret clearance with ability to obtain Top SecretBachelor’s degree in Information Security, Information Systems, Cybersecurity, IT/Network Administration (or 4–8 years direct experience in lieu of degree)Current DoD 8570.01 IAM II certification (Security+ w/ CE) or ability to obtain within 6 monthsWorking knowledge of Windows and Linux systems; 4+ years Linux administration experienceExperience administering Linux in a Windows domain environment1–3 years configuring switches and firewalls (Cisco experience strongly preferred)Experience with RMF, NIST, CNSS, DSS, and DoD cybersecurity directivesStrong customer service skills; ability to independently prioritize multiple tasksMust be willing to pursue CISSP and RHCSA within first year of employmentSecurity+ and Linux certification (Red Hat or Linux+)We’re not looking for perfectly polished resumes or perfect fits. We’re looking for people who break limits, ask hard questions, and don’t wait to be told what’s next. At Leidos, we’re not following the roadmap — we’re redrawing it. Original Posting:November 10, 2025For 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 $85,150.00 - $153,925.00The 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-DescriminationAll 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.