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IT Systems Administrator Security Clearance

Job in Merrimack, Hillsborough County, New Hampshire, 03054, USA
Listing for: BAE Systems
Full Time position
Listed on 2026-01-08
Job specializations:
  • IT/Tech
    Systems Administrator, Cybersecurity, IT Support, Network Security
Salary/Wage Range or Industry Benchmark: 77809 - 132275 USD Yearly USD 77809.00 132275.00 YEAR
Job Description & How to Apply Below
Position: IT Systems Administrator with Security Clearance
Job Description We put our customers first - exemplified by our missions: "We Protect Those Who Protect Us®" and "We Innovate for Those Who Move the World." Sound like a team you want to be a part of? Come build your career with BAE Systems. BAE Systems is seeking a proactive and detail-oriented Closed Area Systems Administrator to join our Information Technology team supporting classified environments.

This individual will work with a dynamic team responsible for the configuration, maintenance, and security of IT systems housed in closed areas, supporting critical national defense programs. As a key member of the IT support organization, you will play a vital role in managing and maintaining classified computing infrastructure while ensuring strict adherence to security compliance requirements such as RMF, NIST 800-53, and JSIG.

In this System Adminstrator II position supporting our closed areas you will make impacts in the following ways;
* Perform user account administration, group policy configuration, and role-based access control in Active Directory for a classified environment.

* Provide desktop systems administration, including imaging, configuration, troubleshooting, and secure application support.

* Manage and monitor virtual server instances (e.g., VMware, Hyper-V), ensuring uptime, performance, and resource allocation.

* Lead and track monthly OS and application patching across desktops and servers, ensuring full compliance with security baselines and STIGs.

* Maintain domain health, DNS/DHCP, and group policy objects within Active Directory.

* Support system logging, event correlation, and incident response efforts within the closed area.

* Collaborate with ISSOs and security staff to ensure all system changes comply with RMF and local security policies.

* Maintain thorough system documentation, configuration baselines, and change logs.

* Support classified system accreditation activities and audits as needed. Additional information:

• This role requires 100% onsite work in a secure, closed area-remote or hybrid options are not available

• Work may occasionally require after-hours support for patching or security-related events

• Must be capable of lifting/moving equipment (up to 40 lbs) and performing physical tasks within secure rooms Required Education, Experience, & Skills
* U.S. Citizenship

* Active Secret Security Clearance and CompTIA Security+ or equivalent DoD 8570 IAT Level II certification.

* 3-6 years of experience (2+ years of experience with a degree) as a systems administrator.

* Proficiency in Active Directory, including user/group management, OU structure, and GPOs.

* Hands-on experience with desktop system support (Windows OS) and endpoint hardening.

* Experience managing virtualized server environments (VMware or Hyper-V).

* Familiarity with monthly patching procedures, SCCM/WSUS, and vulnerability remediation.

* Strong documentation skills and familiarity with change/configuration management practices Preferred Education, Experience, & Skills
• Active U.S. TS/SCI Security Clearance.

• 2+ years of experience working in a classified environment

• Experience with secure system build processes and STIG compliance.

• Working knowledge of RMF, NISPOM, and JSIG/ICD 503 requirements.

• Familiarity with backup and recovery tools in classified environments.

• Exposure to scripting (Power Shell, Python, Bash) for automation and task optimization.

• Experience supporting secure enclaves, air-gapped systems, or cross-domain solutions. Pay Information
Full-Time Salary Range: $77809 - $132275

Please note:

This range is based on our market pay structures. However, individual salaries are determined by a variety of factors including, but not limited to: business considerations, local market conditions, and internal equity, as well as candidate qualifications, such as skills, education, and experience.

Employee Benefits:

At BAE Systems, we support our employees in all aspects of their life, including their health and financial well-being. Regular employees scheduled to work 20+ hours per week are offered: health, dental, and vision insurance; health savings accounts; a 401(k) savings plan; disability…
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