> Markdown version of [/jobs/ext/1914721-linux-system-administrator-must-have-a-active-ts-sci-poly-clearance](https://www.wearedevelopers.com/jobs/ext/1914721-linux-system-administrator-must-have-a-active-ts-sci-poly-clearance). 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). --- # Linux System Administrator- Must have a active TS/SCI Poly clearance - **Company:** RTX - **Location:** Richardson, TX, United States - **Experience:** Expert - **Salary:** $68,900.0 - $131,100.0 - **Contract:** Permanent contract - **Skills:** Bash Shell, Cyber Security, Linux, VMware ESX Servers, Python (Programming Language), Lightweight Directory Access Protocols (LDAP), Performance Tuning, Red Hat Enterprise Linux, Ansible, Scripting, Information Technology, Terraform, User Administration, Vmware - **Published:** August 4, 2026 - **Apply:** https://globalhr.wd5.myworkdayjobs.com/REC_RTX_Ext_Gateway/job/US-TX-RICHARDSON-C27--1727-Cityline-Dr--CITYLINE-C27/Linux-System-Administrator--Must-have-a-active-TS-SCI-Poly-clearance_01863184 ## About the Role * Bachelor's degree and a minimum of 2 years of prior relevant experience. * Must have active and transferable U.S. government issued TS/SCI with CI polygraph security clearance is required prior to start date. U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance. * Must have an active DoD 8570 IAT Level 2 certification (or higher) on start date. IAT Level 2 requires one or more of the following Professional Certifications: Security+ CE, CCNA Security, GICSP, GSEC, SSCP, CySA+, CND. * Experience administering Red Hat Enterprise Linux based systems with minimal support, to include patching, creating/maintaining RPM packages, performance tuning, networking, user management (LDAP), and security hardening * Installing, administering, and troubleshooting recent versions of VMware (ESXi and vCenter) Qualifications We Prefer: * Deployment and administration of systems in Amazon Web Services (AWS)/Commercial Cloud Services (C2S) * Using and developing with automation tools/frameworks such as Terraform, Ansible, and Chef as well as scripting - particularly in Bash and Python * Experience administering Windows based systems * Demonstrated ability to work independently and troubleshoot problems with efficiency * Requires the ability to effectively interact with external personnel on significant technical matters often requiring coordination between organizations and vendors * Ability to effectively interact with external personnel on significant technical matters often requiring coordination between organizations and other areas of RTX ## Description * You will be supporting a Raytheon program in a classified environment as a Sr. Linux System Administrator. * Responsibilities include building, maintaining, and securing Information Technology systems and directly supporting customer mission-critical capabilities. * You will work closely with program developers and system engineers to research issues, determine root causes and implement solutions to system problems. * Must be able to support occasional after-hour maintenance and on-call support and must be able to lift up to 35 pounds in support of hardware installations. * Occasional travel may be required for installation support. * This position is an onsite role. ## Related Videos - [What makes Cybersecurity different for critical infrastructure?](https://www.wearedevelopers.com/videos/571-what-makes-cybersecurity-different-for-critical-infrastructure) - [Docker network without Docker](https://www.wearedevelopers.com/videos/1418-docker-network-without-docker) - [WebAssembly: The Next Frontier of Cloud Computing](https://www.wearedevelopers.com/videos/972-webassembly-the-next-frontier-of-cloud-computing) - [Dev & Test in the Cloud? 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