Linux Administrator - 30750
HII Mission Technologies· enterprise· Defense· Oct 20, 2026 · 7d ago
Des Moines, IA, Iowa, United States
In office
Full-time
Principal
$143K–$219K est.
2+ years exp
Job description
Requisition Number: 30750
Required Travel: 0 - 10%
Employment Type: Full Time/Salaried/Exempt
Anticipated Salary Range: $70,889.00 - $88,000.00
Security Clearance: Secret
Level of Experience: Mid
This opportunity resides with Global Security (GS). Mission Technologies’ Global Security (GS) group comprises live, virtual, constructive (LVC) solutions; fleet sustainment; nuclear and environmental; and Australia business.
As a trusted partner to our military customers, HII designs, develops and operates the largest LVC enterprise that prepares warfighters for cross-domain battle. With advanced technologies to enable mission readiness, HII understands that preparation requires full coordination—not readiness in piece-parts.
For more than 40 years, the U.S. Navy has entrusted HII to maintain and modernize the vast majority of its fleet. With a holistic approach to life-cycle maritime defense systems—from small watercraft to submarines, surface combatants and aircraft carriers—HII ensures a high state of readiness.
HII supports the Department of Energy’s national security mission through the management and operation of its sites, as well as the safe cleanup of legacy waste across the country. HII meets clients’ toughest nuclear and environmental challenges.
Leadership Mindset at HII – Mission Technologies
Leadership at HII is a mindset, not a title. Through our Leadership Capability Framework, we define how every employee grows, leads, and contributes—regardless of role. It sets the standard for how you can develop yourself and what you can expect from leaders across our organization. We look for candidates who want to grow in alignment with these capabilities:
• Know & Grow Your People – Commit to learning and supporting team success.
• Build Relationships – Communicate openly, collaborate well, and build trust.
• Take Ownership – Deliver on commitments and take pride in your work.
• Customer First – Focus on the mission and those we serve.
• Shape the Future – Bring ideas, curiosity, and continuous improvement.
• Act with Urgency – Take initiative and follow through with purpose.
These capabilities guide how all employees contribute to our shared success across Mission Technologies.
Summary
HII Mission Technologies is seeking a Linux Administrator to join our Technology team supporting the Distributed Training Operations Center (DTOC). In this role, you will administer and maintain Linux-based systems that support Distributed Mission Operations (DMO), cybersecurity compliance, mission networks, and other functions critical to Air National Guard training and readiness.
Impact
As a Linux Administrator, you will help ensure secure, reliable, and efficient system operations for mission-critical environments. Your work directly supports national defense by maintaining system integrity, safeguarding sensitive information, and enabling seamless execution of live and distributed training events.
#LI-MJ1
Key Job Responsibilities
• Maintain and administer Linux-based mission systems and multi-user environments, coordinating with network administrators as needed.
• Support installation, configuration, and routine operation of Linux servers, workstations, and peripherals.
• Execute backup, recovery, and basic storage management tasks to support continuity of operations.
• Configure and harden Linux systems in accordance with STIGs, JSIG, and DoD cybersecurity requirements.
• Respond to system outages, performance issues, and troubleshooting requests in a timely manner.
• Participate in team efforts to integrate and support DTOC and OTTI technologies.
• Provide support for Linux-based applications and modeling & simulation (M&S) tools.
• Support cybersecurity monitoring tools such as HBSS and SIEM solutions.
• Implement OS-level patches, security updates, and software releases for Linux systems (and Windows when required).
• Document system configurations, procedures, and long-term operational needs.
What you must have
Education & Experience
• 2 years of relevant experience with a Bachelor’s degree; OR
• 0 years of experience with a Master’s degree; OR
• 6 years of relevant experience with a High School Diploma/equivalent.
Technical Knowledge
• Experience with Linux system administration in a DoD or security-focused environment.
• Ability to apply STIGs and implement cybersecurity controls across Linux systems.
• Familiarity with basic virtualization technologies (e.g., VMware), virtual machines, and LAN environments.
• bility to update and patch Linux and Windows systems, including offline environments.
• Ability to perform basic network analysis and troubleshooting using tools such as Wireshark.
• Working knowledge of Bash or PowerShell scripting for automation and system tasks.
Credentials
• Active DoD Secret Clearance with ability to upgrade to TS.
• U.S. Citizenship.
• IAT Level II certification (e.g., Security+).
• Ability to obatain a CompTIA Linux+, RHCSA or LPIC-1 certification before start.
Preferred Qualifications
• CompTIA Linux+, RHCSA, LPIC‑1 or related certification
• Virtualization certifications such as VMware Certified Professional (VCP).
• Experience supporting DoD or Air National Guard mission systems.
• Familiarity with Zero Trust Architecture and modern cybersecurity frameworks.
• Experience with automation/configuration management tools (Ansible, Puppet, or Chef).
• Experience with enterprise storage solutions and/or backup management for Linux environments.
• Experience analyzing DIS/HLA traffic or M&S environments.
• DISA ACAS Training/Certification.
• Active Top Secret Clearance.
Physical Requirements
May require working in an office, industrial, shipboard, or laboratory environment. Capable of climbing ladders and tolerating confined spaces and extreme temperature variances.
The listed salary range for this role is intended as a good faith estimate based on the role's location, expectations, and responsibilities. When extending an offer, HII's Mission Technologies division takes a variety of factors into consideration which include, but are not limited to, the role's function and a candidate's education or training, work experience, and key skills.
Meet HII’s Mission Technologies Division
Our team of more than 7,000 professionals worldwide delivers all-domain expertise and advanced technologies in service of mission partners across the globe. Mission Technologies is leading the next evolution of national defense – the data evolution - by accelerating a breadth of national security solutions for government and commercial customers. Our capabilities range from C5ISR, AI and Big Data, cyber operations and synthetic training environments to fleet sustainment, environmental remediation and the largest family of unmanned underwater vehicles in every class. Find the role that’s right for you. Apply today. We look forward to meeting you.
To learn more about Mission Technologies, click here for a short video: vimeo.com
HII is more than a job - it’s an opportunity to build a new future. We offer competitive benefits such as best-in-class medical, dental and vision plan choices; wellness resources; employee assistance programs; Savings Plan Options (401(k)); financial planning tools, life insurance; employee discounts; paid holidays and paid time off; tuition reimbursement; as well as early childhood and post-secondary education scholarships. Bonus/other non-recurrent compensation is occasionally offered for qualified positions, and if applicable to this role will be addressed by the recruiter at the screening phase of application.
Why HII
We build the world’s most powerful, survivable naval ships and defense technology solutions that safeguard our seas, sky, land, space and cyber. Our workforce includes skilled tradespeople; artificial intelligence, machine learning (AI/ML) experts; engineers; technologists; scientists; logistics experts; and business administration professionals.
Recognized as one of America’s top large company employers, we are a values and ethics driven organization that puts people’s safety and well-being first. Regardless of your role or where you serve, at HII, you’ll find a supportive and welcoming environment, competitive benefits, and valuable educational and training programs for continual career growth at every stage of your career.
Together we are working to ensure a future where everyone can be free and thrive.
All qualified applicants will receive consideration for employment without regard to race, color, religion, gender, gender identity or expression, sexual orientation, national origin, physical or mental disability, age, or veteran status or any other basis protected by federal, state, or local law.
Do You Need Assistance?
If you need a reasonable accommodation for any part of the employment process, please send an e-mail to buildyourcareer@hii-co.com and let us know the nature of your request and your contact information. Reasonable accommodations are considered on a case-by-case basis. Please note that only those inquiries concerning a request for reasonable accommodation will be responded to from this email address. Additionally, you may also call 1-844-849-8463 for assistance. Press #3 for HII Mission Technologies.
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Benefits
Benefits detected in the listing.
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401(K)
Paid Time Off
Wellness