Systems Administrator (Network Communications 2)

HII's Mission Technologies division•San Diego, CA

4d•$72,933 - $100,000•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 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. Come Join HII! Where Hard Stuff is Done Right!

Requirements

2 years relevant experience with a Bachelor's in a related field; 0 years experience with a Master's in a related field; or High School Diploma or equivalent and 6 years of relevant experience.
Must currently possess, and be able to maintain, an active U.S. Secret security clearance.
Current IAT Level II certification, such as CompTIA Security+.
Hands-on experience in system administration, Windows Server administration, or enterprise IT support.
Experience with Active Directory account management, security groups, permissions, and user access troubleshooting.
Experience supporting Windows-based systems, workstations, servers, and related enterprise services.
Strong team-oriented professional with effective communication skills, ethical judgment, and the ability to document and communicate technical issues clearly.

Nice To Haves

Microsoft, VMware, Red Hat, or other relevant system administration certification.
Demonstrated experience with Windows Server roles, Group Policy, DNS, and Active Directory administration.
Familiarity with DoD Security Technical Implementation Guides (STIGs), eSTIG scanning, checklist review, finding documentation, and remediation.
Experience with patch management, vulnerability remediation, and system hardening in a DoD or enterprise environment.
Experience with virtualization platforms, server monitoring, backup processes, or enterprise management tools.
Familiarity with troubleshooting authentication, smart card, certificate, DNS, and time synchronization issues.
Ability to work with cybersecurity, network, and customer support teams to identify, track, and resolve system issues.

Responsibilities

Maintain the smooth operation of servers, workstations, and supporting enterprise services.
Create, maintain, and troubleshoot user accounts, security groups, permissions, and access rights within Active Directory.
Configure, manage, and troubleshoot Group Policy Objects to support system security, compliance, and operational requirements.
Support Windows Server administration, including server roles, features, services, and routine maintenance.
Maintain DNS records, naming organization, and related system documentation to support reliable network and system operations.
Perform system troubleshooting for authentication, access, server availability, workstation issues, and application or service interruptions.
Support Information Assurance compliance activities, including eSTIG scanning, STIG checklist review, finding documentation, and remediation.
Assist with patch management, software updates, vulnerability remediation, and system hardening efforts.
Prepare or ensure that appropriate system documentation exists, including operational instructions, troubleshooting steps, and configuration records.
Coordinate with network administrators, cybersecurity personnel, customers, and third-party support teams to resolve system issues and maintain operational readiness.
Monitor supported systems and recommend improvements to maintain reliability, security, and performance.