Linux Systems Administrator (RHEL)

Peraton•Chantilly, VA

8d•Onsite

About The Position

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.

Requirements

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 degree
Meet DoD 8140 foundational requirements for a System Administrator at an intermediate proficiency level or above
Expertise in RHEL 8.X and later versions, including system administration, performance tuning, and troubleshooting
Proficiency with RHEL Satellite Server and Ansible, leveraging these tools for configuration management, automation, and system orchestration
Advanced 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 infrastructures
Experience validating health, status, operations, and maintenance of Red Hat Enterprise Linux (RHEL) systems within an enterprise environment, ensuring system stability, security, and performance
Extensive 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 availability
Extensive technical expertise in Linux/RHEL configurations, Git, OS upgrades, and implementation of application updates/upgrades
Strong, 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 identify management applications
Demonstrated experience mentoring junior – mid-level Systems Administrators

Nice To Haves

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 application

Responsibilities

Perform ongoing maintenance, support, and enhancements to RHEL production systems, ensuring compliance with security authorizations
Analyze existing RHEL system architecture and work with cross-functional teams to improve reliability, availability, monitoring, and automation
Partner with engineering teams to enhance RHEL platform stability and simplify architectural complexity
Automate RHEL system administration tasks using Ansible playbooks to improve efficiency and reduce manual intervention
Manage RHEL patch management and security updates through Red Hat Satellite and Ansible
Oversee and optimize RHEL systems, ensuring high availability, performance, and scalability
Conduct daily RHEL system monitoring and perform monthly patching as part of the Operations & Maintenance (O&M) team
Mentor mid-level and junior system administrators, providing guidance and support while effectively managing RHEL-related tasks with minimal supervision
Maintain a weekly schedule within core business hours (9:00 AM – 2:00 PM, Monday through Friday) while ensuring RHEL workload completion beyond this timeframe
Manage Red Hat Enterprise Linux (RHEL) operating systems, including configuration management, performance tuning, software installations, system hardening, security compliance, and storage allocation