> Markdown version of [/jobs/ext/1973446-principal-systems-administrator](https://www.wearedevelopers.com/jobs/ext/1973446-principal-systems-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 Systems Administrator - **Company:** RTX - **Location:** El Segundo, CA, United States - **Experience:** Experienced - **Salary:** $95,500.0 - $181,700.0 - **Contract:** Permanent contract - **Skills:** Microsoft Windows, Active Directory, Antivirus Softwares, Backup Devices, Cyber Security, Dynamic Host Configuration Protocol, Linux, Disaster Recovery, RAID, Domain Name System (DNS), File Server, Identity and Access Management, Windows Servers, Performance Tuning, Red Hat Enterprise Linux, Security Content Automation Protocol, Service Pack, Scripting, Data Storage Management, Information Technology, Performance Monitor, Wsus, Vmware - **Published:** August 7, 2026 - **Apply:** https://globalhr.wd5.myworkdayjobs.com/REC_RTX_Ext_Gateway/job/US-CA-EL-SEGUNDO-E04--2006-E-El-Segundo-Blvd--BLDG-E04/Principal-Systems-Administrator_01864866-1 ## About the Role The ability to obtain and maintain a U.S. government issued security clearance is required. U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance, You will provide System Administration in a heterogeneous Microsoft Windows (Primary OS) environment. Understanding and knowledge of Windows Server internals to include DNS, DHCP, AD, and Windows integration methods. Working as a team member in a fast-paced technological environment. Use troubleshooting techniques to resolve technical problems of a moderate to high scope and complexity to include the integration of hardware and operating systems (OS). Understanding of data RAID, data backup uses and technologies. Install and configure software applications requested by end users. Work with Cybersecurity professionals to maintain security requirements. Must be able to obtain Department of Defense Directive (DoDD) 8140 / 8570 Certification requirements within 6 months of start date. This position has the potential to work off hours and weekends. Qualifications You Must Have: * 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. * The ability to obtain and maintain a U.S. government issued security clearance is required. U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance. * Experience with some of, but not limited to, the following technologies: Red Hat Enterprise Linux, Active Directory, WSUS, VMware, prior systems administration experience. Qualifications We Prefer: * An active DoD Top Secret clearance. * Experience with infrastructure backup, restore, disaster recovery and business continuity products. * Scripting Experience. * Experience using tools like SCAP and following STIGs. * Experience with Linux architecture, deployment, administration, performance monitoring/tuning, security hardening, and troubleshooting. ## Description The candidate's day-to-day activities include but are not limited to: Windows server management; storage management; file server management; access management; data backup; software and license configuration; and workstation support. Each day in the life of a Systems Administrator can bring something new - building a new IT infrastructure for a group of engineers, restoring files due to an outage, updating virus definitions and security patches, teaming with our brilliant engineers on how to improve their processes, and more. ## Related Videos - [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) - [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) - [The best of two worlds - Bringing enterprise-grade Linux to the vehicle](https://www.wearedevelopers.com/videos/67-the-best-of-two-worlds-bringing-enterprise-grade-linux-to-the-vehicle) ## 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) - [Is Software Engineering Over-Saturated?](https://www.wearedevelopers.com/magazine/418-is-software-engineering-over-saturated) - [Dev Digest 134 - Where pixels sing?](https://www.wearedevelopers.com/magazine/477-dev-digest-134-where-pixels-sing) - [Best Paying Jobs in Technology](https://www.wearedevelopers.com/magazine/256-best-paying-jobs-in-technology) - [The Most Popular IT Jobs on the Market](https://www.wearedevelopers.com/magazine/376-the-most-popular-it-jobs-on-the-market)