> Markdown version of [/jobs/ext/2538048-principal-linux-system-administrator](https://www.wearedevelopers.com/jobs/ext/2538048-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:** SciTec, Inc. - **Location:** Aurora, CO, United States - **Experience:** Expert - **Salary:** $149,000.0 - $184,000.0 - **Contract:** Permanent contract - **Skills:** Microsoft Windows, Backup Devices, Bash Shell, Configuration Management, Computer Engineering, Linux, Document Management Systems, Monitoring of Systems, Python (Programming Language), OpenShift, Package Management Systems, Proprietary Software, Red Hat Enterprise Linux, Ansible, Security Content Automation Protocol, Software Engineering, Virtualization Technology, VMware VSphere, Scripting, Software Troubleshooting, Gitlab, Git, Kubernetes, Information Technology, Scap Compliance Checker, Network Server, Docker, Vmware - **Published:** August 1, 2026 - **Apply:** https://www.clearancejobs.com/jobs/9070357/principal-linux-system-administrator ## About the Role We are seeking a skilled Linux System Administrator to support the installation, configuration, security, and ongoing operation of Linux- and Windows-based systems in a secure, mission-focused environment. The ideal candidate is hands-on, detail-oriented, and comfortable working across infrastructure, security, and operations teams., * 8+ years of professional experience administering Linux systems (RHEL preferred) * Experience with: * Installation and configuration of RHEL 8 servers and workstations * System security, hardening (STIG), auditing, and backup strategies * Patch and package management * Virtualization technologies including VMware, Podman, Docker, Image registries, Red Hat Openshift/Kubernetes * Hardware and software troubleshooting * Networking in heterogeneous (Linux/Windows) environments Strong oral and written communication skills Detail oriented Proven ability to work collaboratively in a team environment Self-motivated, detail-oriented, and able to own issues through completion Ability to obtain and maintain a Secret security clearance Candidates who have any of the following skills will be preferred: * Bachelor's degree in Information Technology, Network Engineering, Computer Engineering, or a related technical field * Experience with: * Dell servers, switches, and SAN solutions * VMware vSphere * Root Cause Analysis and documenting findings * DISA SCAP Compliance Checker and DISA STIG implementation * RHEL 8/9/10 * NAS and/or SAN configuration and maintenance * Configuration management, Automation, Scripting (Ansible, Bash, Python) * Git/GitLab and CI/CD pipelines * Containers and orchestration (Podman/Docker, RHOCP/Kubernetes, minikube, image registries) Relevant certifications are preferred but not required i.e. * Security+ * RHCSA / RHCE / LPIC-1 ## Description SciTec, a wholly owned subsidiary of Firefly Aerospace, is a dynamic non-traditional defense contractor that delivers advanced technologies in support of U.S. National Security and Defense. For the past forty-five plus years, we have supported Department of Defense customers by developing innovative remote sensing algorithms, tools, and techniques to deliver world-class data exploitation capabilities supporting missile defense; intelligence, surveillance, & reconnaissance; space domain awareness; and aircraft survivability missions., SciTec has an immediate opportunity for a talented engineer to support our programs delivering Next-Generation Missile Warning software. This is a unique opportunity to join a business delivering core capabilities for National defense. You will work within a fast-paced team delivering end-to-end software processing of Overhead Persistent InfraRed (OPIR) sensor data for Missile Warning, Missile Defense, Battlespace Awareness, and Technical Intelligence., * Serve as the technical team lead for the System Administrator group, providing mentorship, guidance, and oversight to ensure consistent operational excellence * Install, configure, and maintain Red Hat Enterprise Linux (RHEL) workstations and servers in accordance with defined baselines * Implement and maintain system security, hardening, integrity monitoring, backups, and auditing i.e. STIG, SCAP * Perform patch and package management, including installation and maintenance of third-party software i.e. IDEs, Pypi, Docker registry, * Monitor system performance, availability, and health; troubleshoot and resolve hardware and software issues, * Support and maintain virtualized and workstation environments (e.g., VMware) * Install, configure, and troubleshoot servers, switches, and storage systems * Configure and support networking in mixed Linux and Windows environments * Document system configurations, procedures, and changes in accordance with policies and requirements * Collaborate effectively with team members, security personnel, and end users * Provide technical support and respond to operational issues through resolution * Participate in continuous improvement, automation, and modernization efforts * Perform other duties as assigned ## Related Videos - [Enabling automated 1-click customer deployments with built-in quality and security](https://www.wearedevelopers.com/videos/83-enabling-automated-1-click-customer-deployments-with-built-in-quality-and-security) - [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) - [How a Small Team Shrank a Microsoft Monorepo by 94%](https://www.wearedevelopers.com/videos/1236-how-a-small-team-shrank-a-microsoft-monorepo-by-94) - [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) ## Related Articles - [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) - [Is Software Engineering Over-Saturated?](https://www.wearedevelopers.com/magazine/418-is-software-engineering-over-saturated) - [Why Upskilling And Reskilling is Important For Developers](https://www.wearedevelopers.com/magazine/428-why-upskilling-and-reskilling-is-important-for-developers) - [Dev Digest 121 - AI goes offline](https://www.wearedevelopers.com/magazine/456-dev-digest-121-ai-goes-offline) - [Now is the time for industrialized software development](https://www.wearedevelopers.com/magazine/601-now-is-the-time-for-industrialized-software-development)