> Markdown version of [/jobs/ext/3542790-principal-windows-system-administrator](https://www.wearedevelopers.com/jobs/ext/3542790-principal-windows-system-administrator). 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). --- # Principal Windows System Administrator - **Company:** RTX - **Location:** El Segundo, CA, United States - **Salary:** $95,500.0 - $181,700.0 - **Contract:** Permanent contract - **Skills:** Microsoft Windows, Active Directory, Domain Controllers, Computing Platforms, CompTIA Security+, Cyber Security, Dynamic Host Configuration Protocol, Desktop Virtualization, Domain Name System (DNS), VMware ESX Servers, Monitoring of Systems, Hyper-V, Hypervisor, Microsoft Software, NetApp Applications, Server Virtualization, VMware VSphere, Software Vulnerability Management, Backup and Restore, Symantec, Data Logging, Scripting, Information Technology, Vcenter, Performance Monitor, Patch Management, Nessus, National Industrial Security Program Operating Manual (NISPOM), Splunk, Wsus, Vmware - **Published:** October 2, 2026 - **Apply:** https://www.clearancejobs.com/jobs/9211534/principal-windows-system-administrator ## About the Role * Typically requires a University degree or equivalent experience and a minimum of 5 years of prior relevant experience or an Advanced Degree in a related field and minimum 3 years experience. * Active and transferable U.S. government issued Secret security clearance is required prior to start date. U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance. * Experience administering one or more of the following: Active Directory, Exchange, WSUS, Server Virtualization (Hyper-V, VMware), Group Policy, or backup and Recovery. * 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. Qualifications We Prefer: * Implementing and enforcing information security compliance standards and policies. * Experience managing large Storage environments (HPE MSA or NetApp). * Experience with Ivanti, Symantec, Splunk, Tenable and Nessus products. * Experience working with NISPOM, DFARS, JSIG, RMF, handling classified information, and working with compliance teams. * Experience managing core network and infrastructure like domain controllers, global catalogs, DNS, and DHCP. * Experience in patch management, vulnerability remediation, operating system upgrades, computer security, system monitoring and logging. * Managing environments with multi-server, multi-tenant, and large storage footprints. * Experience working with geographically dispersed teams. * Experience using VMWare vCenter, vSphere, ESXi, Virtual Desktop Infrastructure (VDI), and Microsoft Hypervisor. * Automation and task orchestration through scripting and off-the-shelf tools experience. ## Description * Manage Windows Enterprise environments including system management, performance monitoring, process automation, security hardening, and technical troubleshooting. * Maintain compliance standards, monitor security systems, and proactively respond to threats using enterprise security tools such as Ivanti, Splunk, Tenable, and SEP. * Apply Business Continuity principles, including working knowledge of enterprise backup hardware and software platforms, data backups and system recovery. * Collaborate with program management, application, security, vendor, and executive stakeholders to plan, design, and implement new IT infrastructure solutions. * Conduct short-term and long-term capacity planning for technology modernization. * Plan and execute small to medium sized projects. * Create, update, and maintain IT documents and technical artifacts. ## 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) - [WebAssembly: The Next Frontier of Cloud Computing](https://www.wearedevelopers.com/videos/972-webassembly-the-next-frontier-of-cloud-computing) - [What makes Cybersecurity different for critical infrastructure?](https://www.wearedevelopers.com/videos/571-what-makes-cybersecurity-different-for-critical-infrastructure) - [Generating code with Angular schematics](https://www.wearedevelopers.com/videos/129-generating-code-with-angular-schematics) - [Security Pitfalls for Software Engineers](https://www.wearedevelopers.com/videos/726-security-pitfalls-for-software-engineers) - [The Developer Workstation Blind Spot: Why Your Security Stack Can't See What Matters Most](https://www.wearedevelopers.com/videos/100254-the-developer-workstation-blind-spot-why-your-security-stack-can-t-see-what-matters-most) ## 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) - [How We Built a Worry-Free System That Runs for 10+ Years – And What We’d Do Again](https://www.wearedevelopers.com/magazine/751-how-we-built-a-worry-free-system-that-runs-for-10-years-and-what-we-d-do-again) - [Highest Paying Tech Companies for Developers](https://www.wearedevelopers.com/magazine/220-highest-paying-tech-companies-for-developers) - [Events like RSAC Get You CISOs. Developers Decide What Actually Gets Deployed.](https://www.wearedevelopers.com/magazine/693-events-like-rsac-get-you-cisos-developers-decide-what-actually-gets-deployed) - [The Most Popular IT Jobs on the Market](https://www.wearedevelopers.com/magazine/376-the-most-popular-it-jobs-on-the-market) - [Best Paying Jobs in Technology](https://www.wearedevelopers.com/magazine/256-best-paying-jobs-in-technology)