Senior Enterprise Red Hat Enterprise Linux (RHEL) Administrator

General Dynamics Information Technology • Fort Belvoir, VA

1d • $137,700 - $186,300 • Onsite

About The Position

The Senior Enterprise Red Hat Enterprise Linux (RHEL) Administrator serves as a senior technical authority responsible for administration, sustainment, security, resiliency, and modernization of enterprise Linux infrastructure supporting the Defense Threat Reduction Agency (DTRA) mission at Fort Belvoir, Virginia. The role provides advanced systems administration, troubleshooting, automation, cybersecurity compliance, and technical leadership for mission-critical environments.

The position supports the Defense Stockpile Management Systems (DSMS) portfolio, including DIAMONDS, JADE, NIMACS, GAT, and DATS. The administrator ensures these environments remain secure, available, compliant, recoverable, and capable of supporting high-priority operational requirements. The role is onsite, with 40 scheduled weekly hours and no travel required.

Requirements

• 8 or more years of related experience.
• Fully adjudicated Top Secret clearance with Top Secret/Sensitive Compartmented Information eligibility; must be a U.S. citizen.
• Bachelor of Science degree in a related field, or equivalent work experience as a substitute.
• Ability to work independently and as part of a team.
• Strong communication and collaboration skills.
• Advanced problem-solving and critical-thinking abilities.
• Adept use and navigation of the RHEL command-line interface.
• Holistic understanding of RHEL platform interactions with external applications, platforms, and services, such as Active Directory/LDAP integration, network file service protocols, and Active Directory Certificate Services.
• Intermediate RHEL 7 and 8 system-administration skills and knowledge of configuring the technologies and services provided by the platforms.
• Significant experience developing and executing shell scripts.

Nice To Haves

• Experience supporting Appian Platform, Tenable Security Center and Nessus (ACAS), Trellix ESS (client-side), IdM, and git repositories.
• Intermediate RHEL 7 and 8 system-engineering experience and knowledge of concepts such as automation, orchestration, and strategic planning.
• Understanding of DevSecOps concepts and practices.
• Basic knowledge of SecurID RSA multifactor-authentication RHEL client configurations.
• Strong work ethic, motivation, and desire to learn.
• Effective time-management and organizational skills.
• Red Hat certification, such as Red Hat Certified System Administrator (RHCSA).
• Oracle Certified Professional – Oracle Linux System Administrator (OCP-OLSA).

Responsibilities

• Serve as a senior technical authority for RHEL platforms supporting DSMS mission applications, services, and enterprise infrastructure.
• Collaborate with Government stakeholders, program leadership, cybersecurity personnel, and technical operations teams to analyze, design, configure, test, integrate, sustain, and modernize RHEL systems.
• Develop, maintain, and enforce scalable RHEL configuration-management practices, baseline configurations, automation, system-hardening standards, and operational procedures.
• Conduct platform needs assessments, gap analyses, architecture reviews, and capacity evaluations; develop and implement solutions to improve availability, performance, resiliency, and maintainability.
• Deploy, configure, patch, upgrade, and sustain RHEL operating systems, applications, security tools, configuration-management services, and supporting infrastructure.
• Troubleshoot and resolve complex platform, application, network, storage, authentication, automation, and performance issues; lead root-cause analysis and document corrective actions.
• Implement, manage, validate, and audit DISA STIGs, vulnerability-remediation actions, mitigation strategies, Plan of Action and Milestones inputs, and cybersecurity compliance evidence.
• Support enterprise patching, vulnerability management, system monitoring, audit logging, backup and recovery, disaster recovery, and continuity-of-operations requirements for RHEL platforms.
• Serve as a primary technical point of contact for RHEL platform support affecting mission applications and services, coordinating resolution with Application, Database, Network, Enterprise, Cybersecurity, Virtualization, and Field Support teams.
• Develop and maintain technical documentation, standard operating procedures, implementation plans, recovery procedures, automation scripts, and configuration records.
• Provide technical leadership, mentoring, and quality assurance for junior administrators; guide implementation decisions and promote consistent, secure, and supportable RHEL operations across the enterprise.

Benefits

• 401(k) with company match.
• Comprehensive health and wellness packages, including medical plan options, some with Health Savings Accounts.
• Dental and vision plan options.
• Paid education and certifications.
• Professional growth opportunities and an internal mobility team.
• Full flex work weeks where possible.
• Paid time off plans, including vacation, sick and personal time, holidays, paid parental, military, bereavement, and jury duty leave.
• Short- and long-term disability benefits, life insurance, accidental death and dismemberment coverage, personal accident insurance, critical illness insurance, and business travel and accident insurance.

What This Job Offers

• Job Type: Full-time
• Career Level: Senior