Endpoint Systems Administrator

HII's Mission Technologies division•Springfield, VA

3d•$61,116 - $125,000•Onsite

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. 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. 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. Due to the classified nature of the mission and the sensitivity of the operational environment, an active TS/SCI security clearance will be required. Candidate must be willing to obtain and maintain a CI poly.

Requirements

5+ years of progressively responsible endpoint administration experience.
Demonstrated proficiency and expertise in the following: Deploying, configuring, and managing Windows or ThinLinux end‑client operating system solutions.
Installing, configuring, monitoring, and troubleshooting Microsoft and third‑party enterprise applications across large endpoint environments.
Performing comprehensive operating system and application patching via MECM/SCCM, including researching updates, testing in controlled environments, deploying to production, troubleshooting failures, and executing rollback procedures when required.
Applying, validating, and maintaining security configurations based on Security Requirements Guides (SRGs) and Security Technical Implementation Guides (STIGs) for all supported endpoint platforms.
Managing endpoint configuration, compliance, and automation through enterprise tools such as MECM/SCCM, Intune, or similar technologies.
Diagnosing and resolving escalated endpoint issues requiring advanced technical knowledge of OS internals, application behavior, and configuration dependencies.
Performing post‑deployment remediation and cleanup patching using PowerShell or similar scripting tools to automate updates, enforce configuration baselines, and resolve inconsistent patch states.
TS/SCI clearance required with ability to obtain CI Poly
Must meet DoD 8140/CSWF for 451-Intermedediate or be willing to obtain the appropriate credential within 6 months

Nice To Haves

Formal training or vendor certifications related to operating system administration or MECM/SCCM.
Experience automating endpoint management tasks using PowerShell or similar scripting tools.
Familiarity with modern endpoint management solutions such as Intune or Autopilot.

Responsibilities

Develop, maintain, and optimize standard operating system images for all enterprise endpoint devices.
Own the full lifecycle of desktop OS platforms, including design, configuration, testing, release, documentation, and continuous improvement.
Manage deployment, maintenance, and version control for major enterprise applications and core endpoint software suites.
Lead the patch management process for operating systems, security updates, and application patches; ensure timely, compliant, and well-communicated release cycles.
Evaluate and integrate new tools, technologies, and methods to improve endpoint stability, security, and performance.
Collaborate with cybersecurity teams to ensure compliance with security policies, vulnerability remediation, and hardening standards.
Create and maintain technical documentation, configuration baselines, and operational procedures.
Provide Tier 3 support for escalated endpoint issues requiring deep technical expertise.
Monitor system performance, reliability, and patch compliance using enterprise management tools.
Participate in strategic planning for endpoint technology architecture and long‑term modernization efforts.