UNIX/Windows System Administrator (Systems Administrator 3) 27215

HII Mission Technologies is currently seeking a UNIX/Windows System Administrator to support our work at Beale AFB, CA. The U-2 enterprise relies on secure, resilient, and continuously available information systems to execute some of the Air Force’s most demanding ISR missions. Your expertise ensures that both classified and unclassified systems remain operational, protected, and ready to support global operations around the clock.

What This Role Offers -

• A critical position supporting 24/7/365 mission-essential system operations
• Hands-on work across both UNIX and Windows environments in a high-visibility ISR mission
• Opportunities to support technical projects, system upgrades, and modernization efforts
• Daily collaboration with a diverse team supporting advanced mission systems
• A chance to directly influence mission continuity, cyber readiness, and system performance #LI-SF1

What You Will Do:

System Administration & Continuity

• Ensure continuous availability of classified and unclassified UNIX and Windows systems
• Provide daily system administration, maintenance, and troubleshooting support
• Sustain operating capability across servers, workstations, and virtualized environments

Technical Support & Troubleshooting

• Diagnose and resolve hardware and software issues across hybrid infrastructures
• Support users with system access, configuration, and technical assistance
• Maintain secure, compliant, and mission-ready IT environments

Project Support & Implementation

• Assist with technical project development and implementation
• Support system upgrades, enhancements, and modernization initiatives
• Collaborate with team members to integrate new capabilities into existing environments

Documentation & Compliance

• Maintain accurate system documentation and configuration records
• Ensure compliance with DoD, Air Force, and security directives
• Support audit readiness and system security requirements

• 6 years relevant experience with Bachelors in related field; 4 years relevant experience with Masters in related field; or High School Diploma or equivalent and 10 years relevant experience.
• Previous experience as a System Administrator in a hybrid Windows/UNIX environment
• CompTIA Security+ CE (or higher) in accordance with DoD 8570.01-M
• Strong foundational knowledge of troubleshooting hardware and software infrastructures
• Active TS/SCI clearance
• Valid passport

Preferred Requirements

• Bachelor’s degree in Computer Science or a related technical field
• Experience with license managers in Windows and UNIX environments
• Scripting, coding, or programming experience (Java, .NET, or similar)
• High-Performance Computing (HPC) experience

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.

This opportunity resides with All-Domain Operations (ADO), a business group within HII’s Mission Technologies division. All-Domain Operations comprises multi-domain operations, platforms and logistics, and intelligence operations.

HII designs, develops, integrates and manages the sensors, systems and other assets necessary to support integrated ISR operations and accelerated decision-making. With data fusion and mission management capabilities for the Department of Defense, the combatant commands and the intelligence community, HII advances the mission around the globe.

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., 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.