Senior Systems Administrator - Desktop

HII's Mission Technologies division•Port Hueneme, CA

2d•$95,000 - $135,000

About The Position

This opportunity resides with Warfare Systems (WS), a business group within HII’s Mission Technologies division. Warfare Systems comprises cyber and mission IT; electronic warfare; and C5ISR systems. HII works within our nation’s intelligence and cyber operations communities to defend our interests in cyberspace and anticipate emerging threats. Our capabilities in cybersecurity, network architecture, reverse engineering, software and hardware development uniquely enable us to support sensitive missions for the U.S. military and federal agency partners. 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. HII’s Mission Technologies division is dedicated to delivering cutting-edge solutions that advance national security and defense objectives. This position is part of our Cyber and Intelligence division, which plays a critical role in supporting Enterprise-Level Security and Modernization efforts across IT infrastructure, cybersecurity, physical facilities, and personnel operations. The selected candidate will contribute to a high-impact government program focused on enhancing and securing mission-critical systems and environments. The program is scheduled to launch in early 2026 and due to the classified nature of the mission and the sensitivity of the operational environment, an active TS/SCI security clearance will be required. This role is responsible for providing technical support in the organization’s end‑user computing environment. You will work closely with stakeholders to ensure timely resolution of technical issues. In addition to hands‑on troubleshooting, this role assists with maintaining system security, supporting hardware and software lifecycles, and ensuring reliable day‑to‑day operation of end‑user technology. This is an excellent opportunity to bring your technical knowledge to a growing team and help support our mission

Requirements

5+ years progressively responsible IT desktop administrator experience
Demonstrated proficiency and expertise in deploying and managing Windows or ThinLinux end-client solutions
Demonstrated proficiency and expertise in providing support to a variety of EUC platforms and applications such as thick, thin, and zero clients with Citrix Zendesktop, appV, and Windows Terminal Services
Demonstrated proficiency and expertise in installing, configuring, monitoring, and troubleshooting Microsoft and third-part applications
Demonstrated proficiency and expertise in patching operating systems and applications via MECM/SCCM, to include research, testing, installation, troubleshooting, and rollback.
Demonstrated proficiency and expertise in applying and maintaining a standard security configuration based on SRGs and STIGs.
Must meet DoD 8140/CSWF for 451-Intermedediate or be willing to obtain the appropriate credential within 6 months
Active TS/SCI government security clearance required to start

Responsibilities

Provide advanced desktop support and hands‑on troubleshooting for end‑user computing environments, ensuring users have reliable, secure, and well‑functioning workstations, peripherals, and productivity tools.
Apply mid- to senior-level expertise to diagnose complex issues, support hardware and software lifecycles, and maintain a high‑quality user experience across the organization.
Resolve escalated service desk tickets.
Perform workstation deployments and configurations.
Support operating system and application updates.
Troubleshoot Windows, and Citrix issues.
Configure and maintain endpoint security tools.
Support peripheral devices, network connectivity, and user authentication problems.
Participate in hardware lifecycle planning, software packaging and distribution, and documentation of support procedures.
Contribute to process improvements.
Assist with inventory accuracy.
Mentor junior technicians.
Ensure end‑user computing systems remain stable, secure, and aligned with organizational policies and operational needs.