Linux/VMWare Systems Administrator (Systems Administrator 5)

About the role

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 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. The Navy Integrated Training Environment (NITE) Network Administrator is responsible for administering, maintaining, and securing the Navy Enterprise Tactical Training Network (NETTN) infrastructure, with a primary focus on Linux-based systems and VMware virtualization platforms supporting enterprise-wide modeling and simulation services.

Responsibilities

• Ensures optimal performance and availability of multi-user Linux and VMware environments, coordinating activities with other administrators as required.
• Manages VMware infrastructure including provisioning, monitoring, resource allocation, and optimization of virtual machines.
• Performs Linux server administration including account and permission management, configuration management, system tuning, and log analysis.
• Maintains system documentation, configuration baselines, and ensures compliance with DoD cybersecurity requirements.
• Evaluates and integrates hardware and software technologies, coordinates installation efforts, and supports system backup and recovery processes.
• Develops, implements, and enforces policies and standards for managing system resources and maintaining operational readiness.

Requirements

• 15 years relevant experience with a Bachelor’s in a related field; 13 years with a Master’s; or 19 years relevant experience with a High School diploma/equivalent.
• Hands-on experience with VMware ESXi and vCenter management.
• Familiarity with VDI technologies and associated protocols.
• Strong Linux troubleshooting, scripting, and system diagnostics skills.
• Ability to interpret technical documentation and apply enterprise configuration standards.
• Strong attention to detail and ability to manage multiple responsibilities.
• Excellent written and verbal communication skills.
• Security+ or equivalent DoD 8570 certification.
• Must hold and maintain an active Secret security clearance.

Qualifications

• Experience administering RedHat Enterprise Linux (RHEL 8/9) desktop and server environments.
• Experience with enterprise patching solutions and applying Linux STIGs.
• Familiarity with Windows systems (server and desktop) in mixed environment enterprises.
• Experience with automation tools such as Ansible, Bash scripting, or other Linux automation frameworks.
• Experience integrating DoD STIGs, security baselines, and configuration controls in Linux and virtualized environments.
• Proven ability to balance customer support needs with technical priorities.

Benefits

We offer competitive