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Specialist, System Administration Security Clearance

Job in Greenville, Hunt County, Texas, 75401, USA
Listing for: L3Harris Technologies
Full Time position
Listed on 2026-02-24
Job specializations:
  • IT/Tech
    IT Support, Systems Administrator, Cybersecurity, Cloud Computing
Job Description & How to Apply Below
Position: Specialist, System Administration with Security Clearance
L3

Harris is dedicated to recruiting and developing high-performing talent who are passionate about what they do. Our employees are unified in a shared dedication to our customers' mission and quest for professional growth. L3

Harris provides an inclusive, engaging environment designed to empower employees and promote work-life success. Fundamental to our culture is an unwavering focus on values, dedication to our communities, and commitment to excellence in everything we do. L3

Harris is the Trusted Disruptor in defense tech. With customers' mission-critical needs always in mind, our employees deliver end-to-end technology solutions connecting the space, air, land, sea and cyber domains in the interest of national security.

Job Title:

Specialist, System Administration Job

Job Location:

Greenville, Texas (100% Onsite)

Job Schedule:

9/80, off every other Friday; 1st shift

Job Description:

We are seeking a dedicated Systems Administrator with strong Windows Server expertise to join our IT team. The successful candidate will maintain, upgrade, and manage our Windows-based infrastructure while providing comprehensive support across desktop, server, and basic networking levels in a fast-paced environment, ensuring reliable and efficient technology operations throughout the facility. Responsibilities include troubleshooting end-user desktop issues, managing Windows Server configuration, patching, and performance;

addressing foundational networking tasks; and delivering adaptable support across multiple departments and locations. The ideal candidate is resourceful and customer-focused, with excellent organizational skills, the ability to prioritize effectively amid shifting daily demands, and a proactive approach to listening and tailoring solutions to end-user needs.

Essential Functions:

* Install, configure, and maintain Windows servers and associated software in a multi-platform environment.
* Manage Windows Server infrastructure, ensuring seamless integration and operation with Windows systems.

* Monitor system performance and troubleshoot issues, ensuring high availability and optimal performance of all systems.

* Implement and oversee security protocols, conduct system backups, and ensure data recovery processes are in place.

* Collaborate with network staff to ensure smooth and reliable operation of software and systems for fulfilling business objectives and processes.

* Create and maintain documentation on system configuration, mapping, processes, and service records.

* Review system and application logs and verify completion of scheduled jobs

* Apply OS updates, patches, and configuration changes.

* Automate routine tasks using scripting languages such as Bash, Python, or Perl.

* Familiarity / Participate in disaster recovery exercises and actual events.

* Provide technical support and guidance to users and other team members.

* Ensure compliance with internal policies and regulatory standards.

Qualifications:

* Education and Experience bachelor's degree in computer science, Information Technology, or a related field, plus at least 4 years of hands-on experience as a Windows Administrator managing Windows servers (2016, 2019, and later versions). In lieu of a degree, a minimum of 8 years of directly related professional experience is required.

* Certifications Active CompTIA Security+ certification.

* Technical Proficiency

* Strong expertise in Windows Server environments, including configuration, management, patching, and performance optimization.

* Solid knowledge of network protocols and services (e.g., DNS, DHCP, HTTP/S, SSH, FTP).

* Experience with virtualization technologies (e.g., VMware, Hyper-V) and container orchestration tools.

* Familiarity with cloud services such as AWS, Azure, or Google Cloud Platform.

* Proficiency in monitoring tools (e.g., Solar Winds).

* Experience with backup and recovery solutions (e.g., Acronis, Backup Exec).

* Working knowledge of database management systems (e.g., SQL Server, MySQL).

* Proficiency in scripting and automation using languages such as Power Shell, Bash, or Python to support process improvements. Professional

Skills:

* Excellent problem-solving abilities combined with strong verbal and written communication skills to effectively interact with both technical and non-technical stakeholders.

* Proven ability to work independently as well as collaboratively within a team.

* Leadership capability to mentor and guide junior administrators.

* High adaptability to quickly learn and integrate new technologies and methodologies.

* Flexibility and availability to participate in on-call rotations or work outside regular business hours to resolve critical issues. Preferred Additional

Skills:

* Familiarity with security compliance and best practices.

* Knowledge of cybersecurity best practices.

* Microsoft Certified:
Azure Administrator Associate

* VMware Certified Professional (VCP)

* Red Hat Certified System Administrator (RHCSA)
L3

Harris Technologies is proud to be an Equal Opportunity Employer. L3

Harris is…
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