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Linux Security Administrator Jobs (NOW HIRING)

Cypress HCM

Systems Adminstrator

Washington, DC

$50 - $60/hr

System Administrator Job Details * Location : Hybrid in Washington DC (Tuesdays/Thursday onsite ... Use various patch management tools to deploy Microsoft & Linux security updates. Linux Server ...

Govcio LLC

Linux Administrator

San Antonio, TX · On-site

$125K - $135K/yr

Ensures system security by implementing appropriate measures, such as firewalls and intrusion detection systems, and by regularly applying security patches. The Linux administrator also works closely ...

Govcio LLC

Linux Administrator

San Antonio, TX · On-site

$125K - $135K/yr

Ensures system security by implementing appropriate measures, such as firewalls and intrusion detection systems, and by regularly applying security patches. The Linux administrator also works closely ...

CompTech Computer Technologies

OR

Secret Security Clearance** Overview CompTech is seeking a Linux Administrator to support the Defense Logistics Agency (DLA) Enterprise Business (eBusiness) environment. This role is responsible for ...

Beth Page tech

Linux Administrator

Sunnyvale, CA · On-site

Linux Administrator Location : Sunnyvale, CA (On-site) Employment Type : Full-Time Reports To ... This hands-on role requires deep expertise in Linux systems administration, security, and ...

CompTech Computer Technologies

Linux Administrator

Secret Security Clearance** Overview CompTech is seeking a Linux Administrator to support the Defense Logistics Agency (DLA) Enterprise Business (eBusiness) environment. This role is responsible for ...

Hyve Solutions

Linux Administrator

Olive Branch, MS

Job Summary We are seeking an experienced Linux Administrator to manage, maintain, secure, and ... Monitor system performance, availability, and security while proactively identifying and resolving ...

hyve solutions

Linux Administrator

Olive Branch, MS · On-site

Job Summary We are seeking an experienced Linux Administrator to manage, maintain, secure, and ... Monitor system performance, availability, and security while proactively identifying and resolving ...

ValidaTek

Linux Administrator

Pensacola, FL · On-site

This position is responsible for the architecture, day-to-day operations, maintenance, and security ... Administer, maintain, and provide advanced troubleshooting for Red Hat Enterprise Linux (RHEL ...

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Linux Security Administrator information

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$5

$48

How much do linux security administrator jobs pay per hour?

As of Aug 7, 2026, the average hourly pay for linux security administrator in the United States is $48.08, according to ZipRecruiter salary data. Most workers in this role earn between $48.08 and $48.08 per hour, depending on experience, location, and employer.

What are some common challenges faced by Linux Security Administrators in maintaining system security across diverse environments?

Linux Security Administrators often encounter challenges such as managing security updates across multiple distributions, ensuring consistent configuration in hybrid cloud and on-premises environments, and responding to emerging threats. They must balance proactive hardening measures with business needs to avoid disrupting operations. Collaboration with development, network, and compliance teams is key to implementing effective security controls and incident response procedures. Staying current with vulnerabilities and regulatory requirements is also essential for success in this role.

What is the difference between Linux Security Administrator vs Linux System Administrator?

AspectLinux Security AdministratorLinux System Administrator
Primary FocusSecurity management, vulnerability mitigation, access controlsSystem setup, maintenance, performance, and troubleshooting
CertificationsCompTIA Security+, CISSP, Linux Security certificationsCompTIA Linux+, LPIC-1, RHCSA
Work EnvironmentSecurity teams, cybersecurity departments, IT security firmsIT departments, data centers, enterprise networks
ResponsibilitiesImplementing security policies, monitoring threats, managing firewallsInstalling OS, configuring servers, managing user accounts

The Linux Security Administrator primarily focuses on protecting Linux systems from security threats, while the Linux System Administrator manages overall system operations and performance. Both roles require Linux certifications and often work within the same environments, but their core responsibilities differ significantly in scope and focus.

What does a Linux Security Administrator do?

A Linux Security Administrator is responsible for securing Linux-based systems and networks within an organization. This includes managing firewalls, monitoring for vulnerabilities, applying security patches, and responding to security incidents. They also develop and enforce security policies, perform regular audits, and ensure compliance with relevant regulations. Their work is crucial in protecting sensitive data and maintaining the integrity and availability of IT infrastructure.

What are the key skills and qualifications needed to thrive as a Linux Security Administrator, and why are they important?

To thrive as a Linux Security Administrator, you need a strong background in Linux system administration, network security, and an understanding of cybersecurity principles, often supported by a degree in computer science or related certifications like CompTIA Security+ or Red Hat Certified Engineer (RHCE). Familiarity with security tools such as SELinux, firewalls (iptables, nftables), intrusion detection systems (Snort, OSSEC), and scripting languages like Bash or Python is typically required. Analytical thinking, attention to detail, and effective communication are critical soft skills for proactively identifying vulnerabilities and collaborating with IT teams. These skills are essential for protecting systems against threats, ensuring compliance, and maintaining the integrity and availability of organizational data.
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Linux Security Administrator jobs near you
Infographic showing various Linux Security Administrator job openings in the United States as of August 2026, with employment types broken down into 84% Full Time, 13% Part Time, and 3% Contract. Highlights an 93% Physical, 2% Hybrid, and 5% Remote job distribution, with an average salary of $100,000 per year, or $48.1 per hour.

Senior Linux Systems Administrator (RHEL) - Active Top Secret

The One 23 Group

Herndon, VA • On-site

Full-time

Posted 28 days ago

Job description

Description:

**Active Top Secret Clearance Required**


Description

At The One 23 Group, our mission is to set the benchmark for excellence in government services. We empower our clients in the Department of War, Intelligence Community, and Federal Civilian sectors to excel with our advanced capabilities. Our dedication lies in fostering a people-first culture, underpinned by steadfast ethical principles. Embracing innovative technologies and process improvements, we are steadfast in our journey toward a future that is both bright and transformative.


Our expertise spans Enterprise IT, Mission IT and Cyber. With our global footprint, we place a strong emphasis on nurturing our people and culture, which forms the core of our successful strategies in leadership and financial management. We pride ourselves on our extensive experience and effective approach, ensuring that we lead with both innovation and integrity.


Position Summary

The Senior Linux Systems Administrator provides Tier II/III administration and operational support for Red Hat Enterprise Linux (RHEL) and UNIX server environments supporting JSSC Enterprise Services under JC32. Based primarily at the Pentagon, this position supports GCCS-J and JPES mission environments across production, test, and development systems. Responsibilities include server administration, troubleshooting, patching, performance monitoring, security compliance, backup and recovery coordination, configuration management, and technical documentation.


The position requires an active Top Secret clearance, eligibility for SIPRNet access, participation in a 24/7 on-call rotation, and the ability to support continuity-of-operations requirements at Site-R when designated.

Requirements:

Required Qualifications

  • Active Top Secret security clearance with eligibility for SIPRNet access.
  • U.S. citizenship.
  • At least 10 years of relevant IT experience providing technical support and solutions for complex systems and operational environments.
  • Advanced experience administering UNIX/Linux servers, preferably Red Hat Enterprise Linux.
  • Expertise in systems administration, systems architecture, systems integration, network systems management, or a related technical discipline.
  • Current certification meeting DoD IAT Level II requirements, such as Security+, CySA+, GSEC, GICSP, SSCP, CCNA Security, or another approved certification.
  • Ability to work independently, exercise sound technical judgment, and develop solutions to complex IT problems.
  • Ability to support 12x5 operations and participate in a 24/7 on-call rotation.
  • Ability to respond within two hours of notification when on call.
  • Ability to relocate to Site-R within 12 hours for COOP exercises or real-world contingencies when designated as an Emergency Relocation Group member.
  • Ability to perform planned maintenance, repairs, and upgrades outside normal business hours when required.

Duties and Responsibilities

  • Administer and maintain Red Hat Enterprise Linux and UNIX servers across production, test, and development environments.
  • Perform account administration, operating system maintenance, resource monitoring, log analysis, performance tuning, storage support, and system troubleshooting.
  • Engineer, configure, and sustain Linux server hardware, operating systems, and supporting software for mission-critical environments.
  • Test and deploy operating system, COTS, GOTS, security, and IAVA-related patches through approved change-control processes.
  • Apply DISA STIGs and support vulnerability identification, remediation, and security compliance activities.
  • Support backup and recovery coordination, disaster recovery, and continuity-of-operations requirements.
  • Monitor system health, availability, performance, capacity, and operational trends.
  • Test hardware upgrades, software upgrades, patches, IAVAs, and configuration changes in non-production environments before implementation.
  • Perform approved maintenance, repairs, and upgrades during scheduled non-business hours.
  • Document, track, troubleshoot, and resolve incidents through the assigned ticketing system.
  • Support ITIL-aligned incident, problem, change, and configuration management processes.
  • Develop and maintain configurations, SOPs, implementation procedures, maintenance records, test plans, test reports, operational logs, and runbooks.
  • Coordinate with government leads, system administrators, database administrators, application teams, cybersecurity personnel, and external support organizations.
  • Recommend improvements to system administration and IT operations based on industry and ITIL best practices.

Preferred Qualifications

  • Current Linux+, Security+, CySA+, CCNA Security, GSEC, GICSP, SSCP, or other certification meeting DoD IAT Level II requirements
  • Experience administering RHEL in classified Department of Defense operational environments.
  • Experience supporting DISA, GCCS-J, JPES, or comparable command-and-control mission systems.
  • Experience with Linux shell scripting, automation, and system administration tools.
  • Experience applying DISA STIGs, IAVAs, security patches, and vulnerability remediation measures.
  • Experience with VMware or another enterprise virtualization platform.
  • Experience with enterprise monitoring, logging, performance analysis, and capacity-planning tools.
  • Experience with backup and recovery, storage coordination, disaster recovery, and COOP support.
  • Experience supporting ITIL-based incident, problem, change, and configuration management.
  • Experience developing SOPs, runbooks, technical documentation, and system configuration records.