IT Infrastructure Security Specialist with Security Clearance

R-00194516 Description At Leidos, we deliver innovative solutions guided by our commitment to deliver mission success for our customers. Our Mission, Vision, and Values guide the way we do business serving government and commercial customers with smarter, more efficient digital and mission innovations. The Leidos Digital Sector is seeking a highly skilled and experienced IT Infrastructure Security Specialist to support mission critical security operations and safeguard enterprise information systems and infrastructure.

The IT Infrastructure Security Specialist will perform tasks associated with conducting employee background checks, processing and coordinating personnel security clearance investigations, and ensuring compliance with security policies and procedures. The IT Infrastructure Security Specialist will:

• Analyze security alerts, investigate cyber and physical security incidents, and coordinate response actions.
• Conduct vulnerability assessments and risk evaluations across IT and facility environments.
• Monitor and correlate cyber and physical access events to identify potential insider threats or unauthorized access.
• Implement and maintain security contr ols for networks, servers, virtualization platforms, cloud services, and supporting facilities.
• Coordinate implementation and sustainment of physical security measures including contr olled access systems, surveillance systems (CCTV), intrusion detection systems (IDS), and badge/access management for data centers and IT spaces.
• Manage receipt of security documents submitted from applicants.
• Verify the appropriate level of background investigation being requested.
• Ensure all documents required for suitability processing are included and completed properly.
• Conduct agency checks and evaluates results including but not limited to credit reports and processing fingerprint cards.
• Identify potential reciprocity and previous investigations.
• Assist other teams (Investigations, EOD, File Room, etc.) on special projects as needed.

Required Education and Experience

• Requires a current Secret Security Clearance.
• Requires a Bachelor’s degree with 8+ years of prior IT relevant experience or Master’s degree with 6 + years of prior IT relevant experience.

Required Skills

• Ability to consistently make good decisions through a combination of analysis, experience, and judgment.
• Strong organizational skills with the ability to work on multiple projects with multiple deadlines.
• Excellent written, verbal, visual/presentation, interpersonal and communications skills.
• MS Office and the ability to navigate between multiple programs simultaneously.

Clearance Required

• Must possess an active Top Secret security clearance at time of consideration.

ECNOMS If you're looking for comfort, keep scrol ling. 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 14, 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 $107,900.00 - $195,050.00 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.

About Leidos Leidos 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 www. Leidos.com . Pay and Benefits Pay 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 www.leidos.com/careers/pay-benefits . Securing Your Data Beware 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 Leidos.com 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 .

If 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-Discrimination All 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.