Linux Systems Administrator (RHEL) Jobs

Senior RHEL System AdministratorPeraton is a next-generation national security company that drives missions of consequence spanning the globe and extending to the farthest reaches of the galaxy. As the world's leading mission capability integrator and transformative enterprise IT provider, we deliver trusted, highly differentiated solutions and technologies to protect our nation and allies. Peraton operates at the critical nexus between traditional and nontraditional threats across all domains: land, sea, space, air, and cyberspace. The company serves as a valued partner to essential government agencies and supports every branch of the U.S. armed forces. Each day, our employees solve the most daunting challenges that our customers face. Visit peraton.com to learn how we're keeping people around the world safe and secure.Program Overview: Cybersecurity experts, Scrum and Agile professionals and engineers (systems, software, network, and cloud reliability) design and sustain cloud infrastructure to host spacecraft command and control systems. Infrastructure as a Service (IaaS), Antenna as a Service (AaaS), Data as a Service (DaaS), and an active Admin Wide Area Network (AWAN) team are provided.About The Role: Peraton is hiring a Senior RHEL System Administrator to manage and administer Red Hat Enterprise Linux (RHEL) systems and infrastructure within a dedicated production network. This is a hands-on role focused on developing and deploying repeatable processes, automation tools, and infrastructure to enhance system reliability, security, and scalability. As part of our classified Operational Support Network team, you will operate in an Agile environment, supporting a mission-critical program while collaborating with various stakeholders. Your expertise will directly contribute to delivering innovative solutions, optimizing system performance, and ensuring operational success.Responsibilities:Perform ongoing maintenance, support, and enhancements to RHEL production systems, ensuring compliance with security authorizationsAnalyze existing RHEL system architecture and work with cross-functional teams to improve reliability, availability, monitoring, and automationPartner with engineering teams to enhance RHEL platform stability and simplify architectural complexityAutomate RHEL system administration tasks using Ansible playbooks to improve efficiency and reduce manual interventionManage RHEL patch management and security updates through Red Hat Satellite and AnsibleOversee and optimize RHEL systems, ensuring high availability, performance, and scalabilityConduct daily RHEL system monitoring and perform monthly patching as part of the Operations & Maintenance (O&M) teamMentor mid-level and junior system administrators, providing guidance and support while effectively managing RHEL-related tasks with minimal supervisionMaintain a weekly schedule within core business hours (9:00 AM - 2:00 PM, Monday through Friday) while ensuring RHEL workload completion beyond this timeframeManage Red Hat Enterprise Linux (RHEL) operating systems, including configuration management, performance tuning, software installations, system hardening, security compliance, and storage allocationQualifications Required Qualifications:This position requires the candidate to possess a minimum of Top-Secret clearance with the ability to obtain TS/SCI. The candidate must maintain the clearance.Associates degree and 10+ years of experience in a related field; or bachelor's degree and 8+ years of experience in a related field; or a master's degree and 6+ years of experience in a related field. Four (4) years of relevant experience will be considered in lieu of a bachelor's degreeMeet DoD 8140 foundational requirements for a System Administrator at an intermediate proficiency level or aboveExpertise in RHEL 8.X and later versions, including system administration, performance tuning, and troubleshootingProficiency with RHEL Satellite Server and Ansible, leveraging these tools for configuration management, automation, and system orchestrationAdvanced technical knowledge to collaborate with support and engineering teams in managing Linux-based cloud, on-premises, and lab environments, ensuring optimal system performance and reliability, particularly within RHEL-based infrastructuresExperience validating health, status, operations, and maintenance of Red Hat Enterprise Linux (RHEL) systems within an enterprise environment, ensuring system stability, security, and performanceExtensive experience in secure system sustainment, monitoring, backup, recovery, and testing updates for Red Hat Enterprise Linux (RHEL) systems in an enterprise environment, ensuring system integrity and availabilityExtensive technical expertise in Linux/RHEL configurations, Git, OS upgrades, and implementation of application updates/upgradesStrong, firsthand technical expertise in various Linux and RHEL configurations, deployment, and continuous integration technologies, with a proven ability to design and implement robust solutions that evolve alongside new development and meet the needs of end users.Knowledge of Red Hat Identity Management, or other equivalent identity management applicationsDemonstrated experience mentoring junior - mid-level Systems AdministratorsDesired Qualifications:Experience with Atlassian Data Center products (I.e. Jira Service Management, Jira Software, and Confluence)Experience or knowledge of Sentris, or other similar attribute-based security classification services, deployments in an enterprise environment.Knowledge of deploying host instances in Red Hat OpenStack Platform, or equivalent cloud-based applicationBenefits: Peraton offers enhanced benefits to employees working on this critical National Security program, which include heavily subsidized employee benefits coverage for you and your dependents, 25 days of PTO accrued annually up to a generous PTO cap and eligible to participate in an attractive bonus plan. A full listing of available benefits can be viewed at