Linux Systems Administrator Jobs in Manchester, NH

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 FAST Labs Information Technology team supporting a classified environment. 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 Administrator II position supporting a FAST Labs closed area, 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 Top 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.
* 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. 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 (PowerShell, Python, Bash) for automation and task optimization.
* Experience supporting secure enclaves, air-gapped systems, or cross-domain solutions. Pay Information
Full-Time Salary Range: $79365 - $134921 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 coverage; and life and accident insurance. We also have an employee assistance program, a legal plan, and other perks including discounts on things like home, auto, and pet insurance. Our leave programs include paid time off, paid holidays, as well as other types of leave, including paid parental, military, bereavement, and any applicable federal and state sick leave. Employees may participate in the company recognition program to receive monetary or non-monetary recognition awards. Other incentives may be available based on position level and/or job specifics. About BAE Systems Electronic Systems BAE Systems, Inc. is the U.S. subsidiary of BAE Systems plc, an international defense, aerospace and security company which delivers a full range of products and services for air, land and naval forces, as well as advanced electronics, security, information technology solutions and customer support services. Improving the future and protecting lives is an ambitious mission, but it's what we do at BAE Systems. Working here means using your passion and ingenuity where it counts - defending national security with breakthrough technology, superior products, and intelligence solutions. As you develop the latest technology and defend national security, you will continually hone your skills on a team-making a big impact on a global scale. At BAE Systems, you'll find a rewarding career that truly makes a difference. Electronic Systems (ES) is the global innovator behind BAE Systems' game-changing defense and commercial electronics. Exploiting every electron, we push the limits of what is possible, giving our customers the edge and our employees opportunities to change the world. Our products and capabilities can be found everywhere - from the depths of the ocean to the far reaches of space. At our core are more than 14,000 highly talented Electronic Systems employees with the brightest minds in the industry, we make an impact - for our customers and the communities we serve. This position will be posted for at least 5 calendar days. The posting will remain active until the position is filled, or a qualified pool of candidates is identified.