Senior RHEL Systems Administrator (On‑Site)

patriotc0; Maryland; On-site; USD 100,000 - 150,000; Full time

Job summary

Patriot, LLC is seeking an accomplished Red Hat Enterprise Linux Administrator to manage and optimize the RHEL infrastructure for our federal client. The role covers installation, configuration, upgrades, patching, and performance tuning across RHEL 7.x/8.x/9.x with on-site daily work and on-call recall in a 24x7 environment.

You will implement security controls, apply DISA STIGs, perform vulnerability assessments with Tenable/HP WebInspect, automate tasks with Ansible, and collaborate with

Qualifications

• 7+ years of experience as a Linux/Red Hat system administrator.
• Must reside within commutable distance for daily onsite work and on-call requirements.
• Contract role requiring 24x7x365 uptime and recall participation.

Responsibilities

• Administer, support, and optimize RHEL-based server infrastructure (RHEL 7.x/8.x/9.x), including installation, configuration, upgrades, and patch management.
• Perform daily system administration tasks such as user management, permissions, file systems, and network configuration.
• Monitor, analyze, and tune system performance; identify and resolve bottlenecks to ensure reliability and efficiency.
• Execute backup, restore, and disaster recovery operations to safeguard data and maintain high availability.
• Assess, recommend, and implement hardware and software solutions to meet evolving business and technical requirements.
• Develop, maintain, and update documentation for system configurations, processes, and troubleshooting procedures.
• Conduct vulnerability assessments and remediation using tools such as Tenable, HP WebInspect, and other industry-standard platforms.
• Investigate security incidents, assess risks, and design mitigation strategies; implement proactive and reactive security measures.
• Manage and apply DISA STIGs and mitigate KEVs (Known Exploitable Vulnerabilities) to ensure compliance and security.
• Automate routine tasks and system management using Ansible Automation Platform (AAP), scripting languages (Bash, Python, etc.), and other tools to improve operational efficiency.
• Collaborate with cross-functional teams (network, storage, application, and security) to support integrated solutions and resolve complex issues.
• Provide technical guidance and support for system integration, migrations, and upgrades.

Skills

Linux administration

Red Hat Enterprise Linux

Scripting (Bash/Python)

On-call readiness

Tools

Tenable

HP WebInspect

Ansible Automation Platform

DISA STIGs

Job description

Patriot, LLC is seeking an accomplished Red Hat Enterprise Linux Administrator to manage and optimize the RHEL infrastructure for our federal client. The role covers installation, configuration, upgrades, patching, and performance tuning across RHEL 7.x/8.x/9.x with on-site daily work and on-call recall in a 24x7 environment.

You will implement security controls, apply DISA STIGs, perform vulnerability assessments with Tenable/HP WebInspect, automate tasks with Ansible, and collaborate with