Information Technology; IT Systems Administrator; Systems Appli Security Clearance

Position: Information Technology (IT) Systems Administrator (Systems Appli with Security Clearance
Requisition Number: 27302 Required Travel: 0 - 10%

Employment Type:

Full Time/Salaried/Exempt Anticipated Salary Range: $96,278.00 - $ Security Clearance:
Secret Level of

Experience:

Mid 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 C5

ISR, 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. To learn more about Mission Technologies,  for a short video:  Summary HII-Mission Technologies in Mountain View, CA is seeking an experienced and highly capable Information Technology (IT) Systems Administrator for the Defense Innovation Unit (DIU) to serve as a cornerstone of the IT team's technology operations.

Candidate should be a technologist with experience in both modern commercial IT delivery and multiple classification levels of government systems. Candidate should be able to independently configure complex infrastructure, mentor peers, and drive operational excellence across the full IT stack. This role spans the full depth of IT administration: delivering expert-level Tier 1 and Tier 2 end-user support across multiple channels and platforms, managing enterprise network and cloud infrastructure, leading endpoint and mobile device management, and contributing directly to IT policy, procurement, and project planning.

The right candidate is equally comfortable imaging a Windows or Mac workstation, managing network infrastructure, configuring SaaS platform solutions, and training end users on advanced enterprise applications. DIU's environment is fast-paced and mission-critical, working at the intersection of technology and national security - your contributions directly support high-stakes outcomes. You must bring strong independent judgment and the ability to work both autonomously and as a core part of a collaborative IT team.

Key Responsibilities:

* End-User Support (Tier 1 & Tier
2)
* Provide expert technical assistance and support to end users via email, phone, web teleconference, and in person
* Troubleshoot and resolve complex hardware and software problems across Windows, macOS, iOS, and cloud Software as a Service (SAAS) environment
* Triage, prioritize, and track issues and document in helpdesk ticketing system (e.g., Service Now)
* Provide in-person video teleconference (VTC) setup, configuration, and real-time support for senior leadership and mission-critical meetings
* Lead onboarding and out-processing of users for IT, including account provisioning, device configuration, access rights assignment, secure data handling procedures, and end user orientation
* Device & Endpoint Management
* Own the full lifecycle of end-user devices - laptops, desktops, mobile phones, and tablets - across Windows, macOS, iOS, and Android platforms
* Perform system reformatting, reimaging, and OS reinstallation across all supported platforms with speed and consistency
* Configure, enforce, and maintain MDM/UEM policies (e.g., Ninja One, Kandji, Microsoft Intune) to ensure security compliance, patch currency, and organizational standards
* Networking & Infrastructure
* Administer and monitor LAN/WAN infrastructure including routers, managed switches, wireless access points, and next-generation firewalls
* Design, configure, and maintain network segmentation, VLANs, and access control policies
* Manage VPN and remote access solutions for hybrid and remote users
* Configure and maintain server infrastructure (physical and virtual)
* Cloud Services & Platform Administration
* Serve as the primary administrator for cloud productivity platforms including Google Workspace and/or Microsoft 365, managing users, groups, licenses, permissions, and security configurations at an organizational level
* Administer cloud infrastructure and SaaS applications hosted in FedRAMP-authorized environments (e.g., Salesforce, Service Now)
* Own identity and access management (IAM) including SSO configuration, MFA enforcement, conditional access policies, and role-based access controls
* Monitor cloud platform health, capacity, and usage metrics; proactively implement improvements to reliability, performance, and cost efficiency
* Security & Compliance
* Own and enforce IT security policy across endpoints, mobile devices, accounts, and network infrastructure
* Lead vulnerability management activities including patch cadence management, configuration audits, and software update compliance across all managed systems
* Conduct and support security access reviews, system…