Senior Systems Administrator (RHEL)

Overview

TitleL Sr. Systems Administrator-IMWS

Clearance: Secret with TS eligibility

Location: Penacola, FL (Onsite)

Hours: M-F 0600-1430

Foxhole Technology provides robust cybersecurity and IT support capabilities for federal civilian and defense agencies. A recognized leader in navigating technology and security challenges, Foxhole delivers mission-focused innovations to answer evolving and complex needs. Our talented employee-owners provide agile, scalable services and solutions that solve operational gaps, operate critical systems, and protect and secure the enterprise - across the organization and around the world

We are seeking a highly skilled Red Hat Linux Systems Administrator to oversee the configuration, maintenance, and security of Linux-based enterprise systems in a high-security, mission-critical environment. The ideal candidate will bring deep technical expertise in Linux administration, a solid understanding of DoD IT policies and cybersecurity practices, and the ability to provide technical leadership and mentorship to junior staff. This position is fully on-site in Pensacola, FL.

Job Description

• Administer, configure, and maintain Red Hat Enterprise Linux (RHEL) systems across multiple environments (classified and unclassified)
• Apply and ensure compliance with DoD STIGs, IAVM directives, and cybersecurity best practices
• Manage and deploy system patches, updates, and antivirus solutions in accordance with DoD guidelines
• Provide Tier III support for escalated Linux system issues, collaborating with network, security, and application teams as needed
• Support the detection and response to system-level security incidents in coordination with cybersecurity teams
• Participate in cross-functional incident response activities, providing subject matter expertise on affected Linux systems
• Maintain and improve incident response documentation and procedures as they relate to Linux infrastructure
• Monitor system health and performance using tools such as Nagios, Zabbix, or other enterprise monitoring platforms
• Support integration and troubleshooting of cybersecurity tools such as HBSS, ACAS, Nessus, and Splunk
• Manage user accounts, groups, access controls, and permissions based on DoD Identity and Access Management standards
• Support RMF implementation, generate compliance artifacts, and assist in maintaining ATO/IATT status
• Develop and maintain system documentation, including architecture diagrams, build guides, and SOPs
• Participate in the development and testing of disaster recovery, COOP, and backup strategies for Linux systems
• Mentor junior team members and provide guidance on Linux-related projects and operational tasks
• Communicate system or incident status clearly to internal stakeholders when required

Minimum Requirements

• Active Secret clearance, with the ability to obtain Top Secret
• DoD 8570 IAT Level II certification (e.g., Security+ CE) or above-IAT Level III preferred
• 8+ years of experience in Linux systems administration in a DoD or enterprise environment
• Strong expertise in Red Hat Enterprise Linux (RHEL) administration
• Familiarity with automation and scripting (e.g., Bash, Ansible, Python)
• Experience with virtualization technologies such as VMware or KVM
• In-depth knowledge of STIG compliance, RMF, and eMASS processes
• Proven ability to implement and troubleshoot security tools such as HBSS, ACAS, and SIEM solutions
• Excellent analytical, documentation, and communication skills

Desired Experience/Certifications

• Prior experience supporting or participating in cybersecurity incident response activities should this go in Min Quals? Rate is still at issue at 111K
• Familiarity with NIST SP 800-61, FISMA, or ITIL incident management frameworks
• Experience working in DoD or federal cybersecurity environments
• Exposure to cross-functional team coordination during security incidents or system outages

More Information

Requirements of position: Think analytically, effective verbal and written communication skills, make decisions, observe/remember details, interpret data, concentrate on tasks, adjust to change, handle stress/emotions. Regular attendance, maintain work schedule, attend meetings, meet deadlines, keyboard/type, handle confidential information, use math/calculations, stay organized, operate office equipment, may direct others. Must be able to see, have eye/hand coordination, and lift up to 10 lbs. May be exposed to dust/dirt, humidity, and noise.

Foxhole Technology is an Equal Opportunity Employer and makes hiring decisions without regard to race, color, religion, sex (including pregnancy, childbirth and sexual orientation), national origin, age, disability, genetic information, military/veteran status, or any other protected class.