Linux Systems Administrator and Network Engineer

Linux Systems Administrator and Network Engineer Leidos - 3.7 'Aiea, HI Job Details Full-time $73,450 - $132,775 a year 2 hours ago Qualifications Top Secret Clearance GPO Technical documentation TS/SCI Network switch Mid-level Master's degree System maintenance Information security compliance Patch management Bachelor's degree Access control implementation Network router CompTIA Linux+ IT services information & network security Vulnerability management VMware Linux Technical troubleshooting support VPN management IAT Network infrastructure management CompTIA Security+ IAT Level II 2 years Linux administration Security Testing Active Directory management

Full Job Description Description Position:

Linux Systems Administrator and Network Engineer Location:

Camp H.M.

Smith, Hawaii Shift:

Evening Leidos Defense Sector is seeking a skilled Linux Systems Administrator and Network Engineer to support mission‑critical operations at Camp H.M. Smith, HI . In this role, you will provide essential technical expertise to the Theater Mission Planning Center (TMPC), ensuring secure, resilient, and high‑performance network and system operations in a dynamic Department of Defense environment. Key Responsibilities Provide daily on‑site support to Government and DoD personnel, ensuring the security and reliability of the ISSE Guard and TMPC Network. Perform maintenance, patching, STIG implementation, troubleshooting, and vulnerability management for mission‑critical Linux systems. Deliver full‑spectrum network engineering support, including planning, design, configuration, and operational oversight. Assess TMPC Network and LAN components, recommending emerging technologies to enhance mission capabilities. Maintain awareness of evolving tactical capabilities and contribute to TMPC lifecycle development and modernization efforts. Conduct periodic security testing, support accreditation/certification documentation, and implement system upgrades. Perform LAN maintenance, including firewall administration, access control management, VPN configuration, and switch/router updates aligned with baseline standards. Develop solutions to complex technical challenges and communicate best practices across Government and contractor teams. Create, update, and refine security documentation; manage security activity schedules; and produce weekly/monthly LAN configuration reports. Support Information Assurance and Certification activities, advising stakeholders to ensure compliance with security policies and requirements. Basic Qualifications Bachelor's degree with 4+ years of relevant experience. Additional years of experience, training, or certifications may substitute for a degree. Hands‑on experience administering Linux servers and workstations in small, complex network environments. Proficiency with Linux system administration and file transfer protocols. Active IAT Level II certification (e.g., Security+). US Citizen; Currently possesses an Active Top Secret clearance with ability to upgrade to TS/SCI upon hire. Preferred Qualifications Master's degree with 2+ years of relevant experience. Familiarity with Event Viewer, VMware, Active Directory, Group Policy, ACAS, and endpoint secuirty. Active Top Secret/SCI clearance. Possess Advance Linux certification (e.g. Linux+) Why Join Leidos? This is an opportunity to contribute to mission-critical operations while working alongside a dedicated onsite Government team. The successful candidate will be expected to operate independently, adhere to published schedules, and play a key role in advancing secure network operations.

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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:

May 4, 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 $73,450.00 - $132,775.00 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.