Red Hat Enterprise Linux Administrator

Job Title: Red Hat Enterprise Linux Administrator
Job Location: Annapolis Junction, MD
Eligibility/Clearance: Active Secret

Job Description: Seeking an accomplished Red Hat Enterprise Linux
Administrator to provide expertise in managing and optimizing assets for
our federal client's critical operations. As a Red Hat Enterprise Linux
Admin, you will be responsible for managing and maintaining the RHEL
infrastructure. Your role will involve overseeing system administration,
configuration, troubleshooting, and ensuring the stability, security,
and performance of the RHEL environment.

Job-Specific Essential Duties and 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.

Job-Specific Minimum Requirements:
- Active Secret clearance.
- Must be able to report onsite to Annapolis Junction, MD.
Candidates with dual citizenship cannot be considered.
- 7+ years of experience working as a system admin on Linux or Red Hat
systems is required; related experience is acceptable.
- Candidates must reside within a commutable distance for daily onsite
work and on-call requirements.
- This contract supports systems that require 24x7x365 uptime.
Candidates must be willing and able to meet recall requirements,
including participation in a rotational on-call schedule.

Arena Technical Resources, LLC, (ATR) is an Equal Opportunity Employer
(EOE) who will provide equal employment opportunity to employees and
applicants for employment without regard to  race, ethnicity, religion,
color, sex, pregnancy, national origin, age, veteran status, ancestry,
sexual orientation, gender identity or expression, marital status,
family structure, genetic information, or mental or physical disability.