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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Principal System Administrator (onsite) - **Company:** RTX - **Location:** Huntsville, AL, United States - **Salary:** $86,800.0 - $165,200.0 - **Contract:** Permanent contract - **Skills:** Microsoft Windows, Active Directory, Cyber Security, System Configuration, Linux, Digital Technology, VMware ESX Servers, Microsoft SQL Server, System Center Configuration Manager, Windows Servers, NetApp Applications, Performance Tuning, Windows PowerShell, Red Hat Enterprise Linux, Security Content Automation Protocol, Software Deployment, Systems Integration, VMware Infrastructure, Virtualization Technology, VMware Virtualization, Software Vulnerability Management, High Performance Computing, Kubernetes, Rancher, Vcenter, Windows Services, Splunk, Network Server, Devsecops - **Published:** July 20, 2026 - **Apply:** https://www.indeed.com/viewjob?jk=05d79e0b72816bc5 ## About the Role * Must be able to obtain Department of Defense Directive (DODD) 8140 /8570 Certification requirements (CompTIA Security+CE or equivalent certification) within 6 months of start date., * Typically requires a University Degree or equivalent experience and minimum 5 years prior relevant experience, or An Advanced Degree in a related field and minimum 3 years' experience * Experience administering and securing Windows and RHEL servers * Experience with VMware virtualization * Experience with securing system configurations, system hardening * Experience with PowerShell scripting An active and in-scope Secret U.S. government issued security clearance is required for consideration. U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance * An active and in-scope Secret U.S. government issued security clearance is required for consideration. U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance Qualifications We Prefer * Experience serving as a technical SME or primary point of contact for patching, vulnerability remediation, or compliance initiatives. * Hands-on experience with MECM/SCCM, PXE boot services, OS imaging, and automated software deployment frameworks. * Familiarity with NetApp storage and/or HPC environments. * Experience with enterprise Windows services, including Active Directory, Group Policy, and identity integration. * Familiarity with cybersecurity and compliance tooling, such as ACAS, SCAP, Splunk, STIG Viewer, and audit support processes. * Experience supporting or integrating with DevSecOps environments, including Kubernetes, Rancher, and artifact repositories. * Experience with SQL Server, including clustered configurations. * Prior experience supporting DoD, defense, or highly regulated environments * Must be able to obtain Department of Defense Directive (DoDD) 8140 / 8570 Certification requirements (CompTIA) Security+CE or equivalent certification) within 6 months of start date ## Description * Serve as a Principal Systems Administrator supporting Windows and Linux enterprise environments, responsible for the design, implementation, maintenance, patching, and troubleshooting of Windows Server, Windows 11, RHEL 7/8/9, and virtualized infrastructure within a large-scale, mission-critical environment operating 24x7x365. * Experience with Windows and Linux patching, vulnerability remediation, and compliance activities, including STIG/EVAL STIG implementation, SCAP/ACAS support, log collection, and close coordination with Cyber Security teams to maintain continuous compliance with DoD and regulatory requirements. * Design, deploy, and maintain virtual infrastructure using VMware ESXi and vCenter, including VM lifecycle management, host upgrades, performance tuning, and support of critical production workloads. * Engineer and sustain enterprise imaging, deployment, and automation solutions, including MECM/SCCM, PXE, Windows imaging, in-place OS upgrades, and scripted software deployment using PowerShell and automation frameworks. * Administer and support core Windows services and integrations, including Active Directory, Group Policy, secure system configurations, certificate-based authentication, and customized user environments. * Collaborate across Digital Technology, Engineering, Cyber Security, DevSecOps, Networking, Storage, and Tools teams to resolve complex infrastructure, integration, and compliance challenges, while operating independently with minimal oversight. * Support both planned and emergent operational needs in a fully on-site DoD closed-area environment, including occasional after-hours support and up to 10% travel as required to meet program objectives. * Work independently, prioritize competing demands, and execute with minimal direction in a fast-paced operational environment. * Full time 100% onsite position. ## Related Videos - [Our journey with Spring Boot in a microservice architecture](https://www.wearedevelopers.com/videos/511-our-journey-with-spring-boot-in-a-microservice-architecture) - [Docker network without Docker](https://www.wearedevelopers.com/videos/1418-docker-network-without-docker) - [What makes Cybersecurity different for critical infrastructure?](https://www.wearedevelopers.com/videos/571-what-makes-cybersecurity-different-for-critical-infrastructure) - [Docker exec without Docker](https://www.wearedevelopers.com/videos/1094-docker-exec-without-docker) - [Security Pitfalls for Software Engineers](https://www.wearedevelopers.com/videos/726-security-pitfalls-for-software-engineers) - [Discover the open source trio you didn’t expect: .NET and PostgreSQL on Linux](https://www.wearedevelopers.com/videos/2042-discover-the-open-source-trio-you-didn-t-expect-net-and-postgresql-on-linux) ## Related Articles - [What Are The Top Skills Required For Azure Developers?](https://www.wearedevelopers.com/magazine/77-what-are-the-top-skills-required-for-azure-developers) - [Highest Paying Tech Companies for Developers](https://www.wearedevelopers.com/magazine/220-highest-paying-tech-companies-for-developers) - [Dev Digest 134 - Where pixels sing?](https://www.wearedevelopers.com/magazine/477-dev-digest-134-where-pixels-sing) - [Events like RSAC Get You CISOs. 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