Job 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.