> Markdown version of [/jobs/ext/3034193-linux-systems-administrator](https://www.wearedevelopers.com/jobs/ext/3034193-linux-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). --- # Linux Systems Administrator - **Company:** Peraton Inc - **Location:** Silver Spring, MD, United States - **Experience:** Experienced - **Salary:** $112,000.0 - $179,000.0 - **Contract:** Permanent contract - **Skills:** Proxmox, Bash Shell, Ubuntu (Operating System), CentOS, Cyber Security, System Configuration, Dynamic Host Configuration Protocol, Linux, Domain Name System (DNS), Python (Programming Language), Kernel-Based Virtual Machine, Linux System Administration, Linux Servers, Network File Systems, Network Service, Network Administration, Red Hat Enterprise Linux, Ansible, SAP Project System, Service Pack, Shell Script, Systems Integration, Virtualization Technology, Software Vulnerability Management, SAPBasis, Containerization, Kubernetes, Infrastructure Automation Frameworks, Information Technology, Tenable Nessus, Nessus, Puppet, Docker, User Accounts - **Published:** September 23, 2026 - **Apply:** https://www.clearancejobs.com/jobs/9185684/linux-systems-administrator ## About the Role * Active TS eligibility for SCI * 5 years with BS/BA or 3 years with MS/MA degree in Computer Science, Information Technology, or related field. * 3-5+ years of experience managing Linux environments in classified, secure settings. * Proficiency with Linux operating systems (Ubuntu, RedHat), * Understanding of system security requirements in DoD or Intelligence domains (e.g., STIGs, RMF). Bonus/Preferred Qualifications: * Previously worked in SAP environments with SAP systems * Experience with virtualization technologies (KVM, Red Hat, Proxmox,). * Familiarity with configuration management tools (e.g., Ansible, Puppet, Chef). * Knowledge of containerization (Docker, Kubernetes). * Certifications: Red Hat Certified System Administrator (RHCSA), ITIL, or equivalent. * Experience with shell scripting or automation tools (Bash, Python, etc.) to streamline administrative and cybersecurity tasks. * Skilled with automating patch and vulnerability remediation via tools like Ansible, Puppet, or Chef ## Description Peraton is seeking a Linux Systems Administrator with an active TS or TS/SCI clearance to join our team supporting mission-critical operations. The ideal candidate will manage, maintain, and enhance secure Linux-based environments while ensuring uptime and performance for essential applications. The candidate will be working closely with IA team supporting Continuous Monitoring tasks, enforcing cybersecurity compliance, and addressing vulnerabilities identified through Nessus scans. This role involves configuring and maintaining Linux servers and desktops, implementing security mitigations, and ensuring compliance with government standards., * Continuous Monitoring & Vulnerability Mitigation: * Perform continuous monitoring of systems using vulnerability scanning tools like Tenable Nessus. * Identify and analyze vulnerabilities from weekly and monthly scans. * Mitigate identified vulnerabilities by reconfiguring Linux servers and desktops or applying patches, security updates, and configuration changes. * Track, document, and report vulnerability remediation activities to ensure ongoing compliance with Risk Management Framework (RMF) or Intelligence Community standards. Linux System Administration: * Deploy, Configure, maintain, and secure Linux-based servers and desktops (RHEL, CentOS, Ubuntu). * Configure networking services such as DNS, DHCP, and NFS. * Manage user accounts, permissions, and authentication in compliance with security policies. * Harden systems using existing guidelines such as Security Technical Implementation Guides (STIGs) or custom configurations. * Apply and test kernel updates, package upgrades, and security patches in production and development environments. * Monitor Linux systems for performance, security, and availability, resolving issues proactively. * Implement and maintain system backup and disaster recovery procedures. * Collaborate with cross-functional teams to support system integration and deployment efforts. * Stay current with technological advancements and recommend improvements as necessary. * Documentation & Auditing: * Maintain detailed system configuration documentation. * Document vulnerability findings, mitigations, and resolutions in tickets or compliance reports. * Support security audits by providing technical information and collaborating with the Information Assurance teams. Collaboration: * Work closely with the Information Assurance (IA) and Cybersecurity teams to ensure systems meet security requirements. * Collaborate with network administrators and application teams to integrate Linux environments supporting enterprise solutions. ## Related Videos - [Docker network without Docker](https://www.wearedevelopers.com/videos/1418-docker-network-without-docker) - [Hacking MSSQL on Cloud. All of them. How I became sysadmin on Azure, AWS, GCP and Alibaba.](https://www.wearedevelopers.com/videos/100339-hacking-mssql-on-cloud-all-of-them-how-i-became-sysadmin-on-azure-aws-gcp-and-alibaba) - [Docker Compose: Rediscovered](https://www.wearedevelopers.com/videos/1978-docker-compose-rediscovered) - [Automate everything via NodeJS and Puppeteer](https://www.wearedevelopers.com/videos/322-automate-everything-via-nodejs-and-puppeteer) - [Docker exec without Docker](https://www.wearedevelopers.com/videos/1094-docker-exec-without-docker) - [Docker build without Docker](https://www.wearedevelopers.com/videos/100114-docker-build-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) - [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) - [Highest Paying Tech Companies for Developers](https://www.wearedevelopers.com/magazine/220-highest-paying-tech-companies-for-developers) - [The Most Popular IT Jobs on the Market](https://www.wearedevelopers.com/magazine/376-the-most-popular-it-jobs-on-the-market) - [9 Ways to Make Money Hacking](https://www.wearedevelopers.com/magazine/333-9-ways-to-make-money-hacking) - [System change: restart as developer?](https://www.wearedevelopers.com/magazine/39-system-change-restart-as-developer)