> Markdown version of [/jobs/ext/734608-principal-linux-system-administrator](https://www.wearedevelopers.com/jobs/ext/734608-principal-linux-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 Linux System Administrator - **Company:** RTX - **Location:** Tewksbury, MA, United States - **Experience:** Experienced - **Salary:** $86,800.0 - $165,200.0 - **Contract:** Permanent contract - **Skills:** Active Directory, Backup Devices, Cyber Security, Linux, VMware ESX Servers, Red Hat Enterprise Linux, VMware VSphere, Data Storage Technologies, SC Clearance, Virtual Computing, Vcenter, Vmware - **Published:** June 29, 2026 - **Apply:** https://www.indeed.com/viewjob?jk=4ef2fbc5bb8caa9e ## About the Role Do you have experience in vCenter?, Do you have a Master's degree?, * Typically requires a bachelor's degree and a minimum of 5 years of prior relevant experience or a master's degree and minimum of 3 years of prior relevant experience * Must have an active DoD 8570 IAT Level 2 certification (or higher) on start date. * Experience using VMWare vCenter, vSphere, and ESX and/or other virtual computing methods * Must have Red Hat Linux experience * Active and transferable Top Secret U.S. government issued clearance is required prior to start date. U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance Qualifications We Prefer: * Experience with NISPOM, JAFAN, JSIG, DFARS and/or DoD/RMF * Experience with data storage, NAS, and SAN technologies and solutions. * Experience with Active Directory, VMware, administration, backup and recovery * Demonstrated ability to work independently and troubleshoot problems with efficiency ## Description * As Principal System Administrator, you will be supporting a Raytheon Special Access Program based in Tewksbury, MA. * Build, maintain, and secure Information Technology systems and directly supporting customer mission-critical capabilities. * Partner and work with program developers and system engineers to research issues, determine root causes and implement solutions to system problems. * Collaborate and work with Cybersecurity professionals to maintain security requirements. * Systems are operational 24x7 and occasionally require work effort beyond standard work hours. * Must be able to support occasional after-hour maintenance and on-call support and must be able to lift to 35 pounds in support of hardware installations., Please ensure the role type defined below is appropriate for your needs before applying to this role. This position is classified as: Onsite: Employees who are working in Onsite roles will work primarily onsite. This includes all production and maintenance employees, as they are essential to the development of our products. Candidates will learn more about role type and current site status throughout the recruiting process. For onsite and hybrid roles, commuting to and from the assigned site is the employee's personal responsibility. Security Clearance: This position requires a security clearance. DCSA Consolidated Adjudication Services (DCSA CAS), an agency of the Department of Defense, handles and adjudicates the security clearance process. More information about Security Clearances can be found on the US Department of State government website here: https://www.state.gov/m/ds/clearances/c10978.htm As part of our commitment to maintaining a secure hiring process, candidates may be asked to attend select steps of the interview process in-person at one of our office locations, regardless of whether the role is designated as on-site, hybrid or remote. ## Related Videos - [What makes Cybersecurity different for critical infrastructure?](https://www.wearedevelopers.com/videos/571-what-makes-cybersecurity-different-for-critical-infrastructure) - [WebAssembly: The Next Frontier of Cloud Computing](https://www.wearedevelopers.com/videos/972-webassembly-the-next-frontier-of-cloud-computing) - [Docker network without Docker](https://www.wearedevelopers.com/videos/1418-docker-network-without-docker) - [Generating code with Angular schematics](https://www.wearedevelopers.com/videos/129-generating-code-with-angular-schematics) - [Docker exec without Docker](https://www.wearedevelopers.com/videos/1094-docker-exec-without-docker) - [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 - [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) - [What’s the Difference between a Junior, Mid, and Senior Developer?](https://www.wearedevelopers.com/magazine/238-what-s-the-difference-between-a-junior-mid-and-senior-developer) - [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) - [Best US AI Conferences for CTOs in 2026: Build vs. Buy, Vendor Evaluation, and Peer Intelligence](https://www.wearedevelopers.com/magazine/736-best-us-ai-conferences-for-ctos-in-2026-build-vs-buy-vendor-evaluation-and-peer-intelligence)