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, 2026For 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.
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.
Skills Required
- Bachelor's degree with 4+ years of relevant experience
- Hands-on experience administering Linux servers and workstations in complex network environments
- Proficiency with Linux system administration and file transfer protocols
- Active IAT Level II certification (e.g., Security+)
- Currently possesses an Active Top Secret clearance
Leidos Compensation & Benefits Highlights
The following summarizes recurring compensation and benefits themes identified from responses generated by popular LLMs to common candidate questions about Leidos and has not been reviewed or approved by Leidos.
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Healthcare Strength — Healthcare coverage is described as comprehensive, with multiple plan options, low office-visit copays in some plans, and access to mental health and wellness support tools. The availability of HSA/FSA options and employer contributions is positioned as a meaningful part of the total package.
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Retirement Support — Retirement benefits are framed as a strong component of total rewards, highlighted by a 401(k) match and immediate vesting in the standard package. The Employee Stock Purchase Plan is also presented as an additional long-term wealth-building feature.
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Wellbeing & Lifestyle Benefits — Wellbeing and lifestyle supports extend beyond core insurance, including wellness programs, fitness-related stipends, and assistance resources. Work flexibility and related perks are also included as part of the broader rewards experience.
Leidos Insights
What We Do
We Are Leidos For 50 years we have been tackling some of the biggest problems that face our nation and our world. OUR MISSION Through our culture of innovation and history of performance, we develop deep customer trust built on integrity and create enduring solutions that improve our world. Leidos is a science and technology solutions leader working to address some of the world’s toughest challenges in the defense, intelligence, homeland security, civil, and healthcare markets. The company’s 43,000 employees support vital missions for government and commercial customers. Headquartered in Reston, Va., Leidos reported annual revenues of approximately $11.09 billion for the fiscal year ended January 3, 2020. Leidos was cited for the meaningful work employees perform that is challenging, impactful, and aligned with our customers’ missions as reasons professionals want to work and stay at our company. Leidos has also been named to lists including Forbes’ Best Employers for Diversity, Forbes’ America’s Best Employers for Women, Military Times Best for Vets Employers, and Ethisphere Institute’s World's Most Ethical Companies®. Employees enjoy career enrichment opportunities available through mobility and development and experience rewarding relationships with supportive supervisors and talented colleagues and customers. Employees appreciate our flexible work environment, allowing for and encouraging a true work-life balance. Our professionals are also excited about our Employee Resource Groups, like the newly launched Collaborative Outreach with Remote and Embedded Employees (CORE), which strives to create an environment where every employee, regardless of location, feels fully engaged as a valued employee of Leidos. Your most important work is ahead.
