Linux Systems Administrator

Leidos; Suitland (MD); On-site; USD 92,000 - 167,000; Full time

Job summary

Leidos is seeking an experienced Linux Systems Administrator to support mission-critical ST&I systems at ONI in Suitland, MD. The role provides advanced Linux, cybersecurity, and enterprise infrastructure support in a classified environment.

Responsibilities include Linux server administration, system monitoring, vulnerability remediation, and collaboration across engineering, cyber, and operations teams. Active TS/SCI clearance and DoD 8570 IAT Level III cert are required.

Qualifications

• Bachelor’s or Master’s with required years of experience.
• Active TS/SCI clearance (in DISS).
• Active DoD 8570 IAT Level III cert (or able within 30 days).
• Red Hat certification (RHCA preferred) or able within 30 days.

Responsibilities

• Administer and optimize Linux server environments (RHEL & RPM-based).
• Monitor systems, patching, STIG hardening, performance tuning.
• Implement IAVA/IAVB and remediation.
• Support VMware, storage, automation tools, and clusters.
• Maintain HBSS, ACAS, Trellix, and other security tools.
• Manage firewall rules, IDS/IPS, endpoint protection.
• Troubleshoot NetApp storage systems.
• Collaborate with cross-functional teams.

Skills

Linux administration

Troubleshooting

Communication

Problem solving

Education

Bachelor's degree 8+ years

Master's degree 6+ years

Tools

VMware

NetApp storage

RHCA/CISSP/CASP

Job description

Description

Linux Systems Administrator

Location: Suitland, MD

Security Clearance: Active TS/SCI Required

Leidos is seeking an experienced Linux Systems Administrator to support mission‑critical Scientific & Technical Intelligence (S&TI) systems at the Office of Naval Intelligence (ONI) in Suitland, MD. This role provides advanced Linux, cybersecurity, and enterprise infrastructure support within a dynamic classified environment enabling engineering analysis, modeling, and high‑performance computing.

Primary Responsibilities

• Administer and optimize Linux server environments (RHEL & RPM‑based).
• Perform system monitoring, issue resolution, patching, STIG hardening, and performance tuning.
• Execute and document IAVA/IAVB implementation and vulnerability remediation.
• Support VMware, NAS/NFS/CIFS, automation tools, and cluster services.
• Maintain and update HBSS, ACAS scanning, Trellix, and other security tools.
• Manage firewall rule updates, IDS/IPS configurations, and endpoint protection.
• Troubleshoot and maintain NetApp storage systems.
• Collaborate with cross‑functional engineering, cyber, and operations teams.

Required Qualifications

• Bachelor’s degree with 8+ years of experience, or Master’s degree with 6+ years of experience. Additional experience may be considered in lieu of a degree.
• Active TS/SCI clearance (in DISS).
• Active DoD 8570 IAT Level III certification (e.g. CASP, CISSP, GCIH, Etc.) or higher or the ability to obtain within 30 days of offer acceptance.
• Current Red Hat Certification (RHCA preferred) or the ability to obtain within 30 days of offer acceptance.
• Strong enterprise Linux administration and troubleshooting expertise.
• Experience with VMware, storage systems, secure transport protocols, and security configuration.
• Excellent communication, problem‑solving, and customer support skills.

Desired Qualifications

• Experience with FLEXnet License Manager.
• Background supporting mission systems or scientific/engineering software environments.

Pay Range:

Pay Range $92,300.00 - $166,850.00

The Leidos pay range for this job level is a general guideline onlyand 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 [e-mail].

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.