Sr. Systems Administrator - 28418

HII's Mission Technologies division•Virginia Beach, VA

10d•Onsite

About The Position

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 team member contributes to our mission and culture: 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 Sr. Systems Administrator to provide mid-level system administration, lifecycle upgrades, and enterprise support for distributed Navy training environments. This role ensures reliable operation of Linux- and Windows-based systems, Performs OS upgrade efforts and provides technical support and leadership across sites. The position requires independent technical judgment, strong problem-solving ability, and the expertise to maintain secure, high‑availability systems. This full‑time, on‑site role is part of a high‑performing engineering team delivering mission‑driven solutions that improve warfighter training and decision‑making.

Requirements

Bachalors Degree with 12 years of relevant experince; OR Masters Degree with 10 years relevant experience
Degree in Electrical/Electronic/Computer Engineering, Computer Science, or Information Systems
Demonstrated ability to architnitiatives.ect, manage, and secure complex enterprise‑level systems and servers.
Advanced proficiency with Red Hat Enterprise Linux (RHEL), including configuration, system hardening, and deep troubleshooting across multiple versions.
Proven expertise with the Assured Compliance Assessment Solution (ACAS), Security Content Automation Protocol (SCAP), and large‑scale patch management.
Background mentoring technical staff and contributing to system modernization and improvement i
Ability to otain a DoD Information Assurance Technician (IAT) Level II certification or higher (e.g., Security+ CE, CCNA Security, CySA+) within 3 months of hire if not currently held.
Must be a U.S. Citizen.
Must have a current or active DoD Secret clearance.

Nice To Haves

Experience with Foreign Military Sales (FMS).
Experience with Navy Training Systems.

Responsibilities

Maintains smooth operation of multi-user computer systems, including coordination with network administrators.
Maintain multi-OS lab environment (i.e. RHEL, Rocky, Windows 11) systems across standalone network systems in a lab environment to support USN BFTT/ATD training systems
Configure, upgrade, and administer Linux (RHEL, Rocky) systems, including installation, BIOS settings, patching
Configure, upgrade, and administer Windows (e.g. Windows11) systems, including installation, BIOS settings, patching
Configure, upgrade, and administer switch IOS (e.g. HP Aruba and Cisco) systems, including installation, BIOS settings, patching
Provide troubleshooting for the environment to provide local and distance support for peers and coworkers
Provide recommendations to the customer based on issues during installation, and operational testing, to include issues with patching and cyber security
Attend various meetings as related to products
Work with customers through the lifecycle of the project from planning, procurement, Test & Evaluation, Implementation, & Operations and Maintenance
Assist with trouble-ticket creation, resolution, implementation
Document creation, review, updates, releasability reviews