> Markdown version of [/jobs/ext/956300-systems-administrator-ii-windows-linux](https://www.wearedevelopers.com/jobs/ext/956300-systems-administrator-ii-windows-linux). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Systems Administrator II, Windows/Linux - **Company:** BAE Systems - **Location:** Nashua, NH, United States - **Experience:** Experienced - **Salary:** $79,365.0 - $134,921.0 - **Contract:** Permanent contract - **Skills:** Microsoft Windows, Active Directory, Bash Shell, Configuration Management, Software Documentation, CompTIA Security+, Data Recovery, Dynamic Host Configuration Protocol, Linux, Domain Name System (DNS), Hyper-V, Python (Programming Language), Local Security Policy, System Center Configuration Manager, Windows PowerShell, Role-Based Access Control, Red Hat Enterprise Linux, Server Virtualization, Software Vulnerability Management, Data Logging, Scripting, Information Technology, CIS Benchmarks, ArcSight Event Correlation, Network Server, Wsus, Server Operating Systems & Platforms, Vmware - **Published:** June 2, 2026 - **Apply:** https://dejobs.org/x/x/7F514A1E045C432A8F592CE310C3284F/job/ ## About the Role * U.S. Citizenship * Active Secret Security Clearance and CompTIA Security or equivalent DoD 8570 IAT Level II certification. * 36 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, Red Hat Linux) 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. * Familiarity with Linux OS 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. ## 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., This role requires 100% onsite work in a secure, closed arearemote 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 ## Related Videos - [Hacking MSSQL on Cloud. 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