Systems Engineer; Linux

Description

Position:
Systems Engineer (Linux)

Location:
Melbourne, FL (Patrick SFB)

Make an Impact with Leidos

At Leidos, we deliver innovative solutions through the dedication of our diverse and talented teams. United by a shared commitment to our customers’ success, we empower our people, support our communities, and operate sustainably. Our Mission, Vision, and Values guide every aspect of our work, ensuring we do the right thing—for our customers, our people, and the world around us.

Thrive in an Impactful Environment

The Leidos Defense Sector offers a broad portfolio of systems, solutions, and services across land, sea, air, space, and cyberspace. We support critical defense missions with capabilities in enterprise and mission IT, large-scale intelligence systems, command and control, geospatial and data analytics, cybersecurity, logistics, training, and intelligence operations. Our teams tackle the world’s toughest security challenges for customers with “can’t fail” missions.

Leidos Defense Sector is seeking a Linux Systems Administrator to support the Air Force Technical Applications Center (AFTAC) U.S. National Data Center (US NDC). The US NDC operates mission‑critical systems across secure, high‑availability classified and unclassified environments.

This role focuses on enterprise Linux workstation administration
, with primary responsibility to support and manage Red Hat Enterprise Linux (RHEL) endpoints using Red Hat Satellite and Ansible automation. The ideal candidate enjoys building repeatable, automated solutions and maintaining a secure, compliant workstation environment supporting a critical national security mission.

Primary Responsibilities:

• Administer and sustain enterprise Red Hat Enterprise Linux (RHEL) workstation environments (200+ endpoints)

• Support Red Hat Satellite
  , including patching, content views, lifecycle environments, and system compliance

• Develop, maintain, and optimize Ansible playbooks for provisioning, configuration management, patch enforcement, and security remediation

• Ensure Linux workstations remain compliant with DISA STIGs
  , RMF controls, organizational cybersecurity policies, and Zero Trust architecture principles

• Automate routine administration tasks to improve consistency, auditability, and operational efficiency

• Monitor workstation health, performance, and patch status; remediate vulnerabilities and configuration drift

• Troubleshoot and resolve OS, application, and hardware issues supporting end users

• Integrate Linux workstations with enterprise identity and network services ( e.g., AD, LDAP, DNS)

• Maintain configuration baselines documentation, and standard operating procedures

• Support on-call rotation and occasional after-hours support as required.

Basic Qualifications:

• Bachelor’s degree in Information Technology, Computer Science, or related disciple with 2+ years of related experience. Additional experience, training, or certifications may substitute for degree

• U.S. citizen;
  Currently possessing an Active DoD Top Secret clearance and eligibility for Top Secret/SCI

• Currently hold a DoD 8140 IAT level II certification (e.g., CompTIA Sec+)

• Hands-on experience administering Red Hat Enterprise Linux environments

• Direct experience supporting systems with Red Hat Satellite

• Experience developing and maintaining Ansible automation

• Proven abilities with Linux system hardening and security compliance practices

• Strong troubleshooting and problem-solving skills

Preferred Qualifications:

• Red Hat certifications (
  RHCSA or RHCE
  )

• Experience supporting large-scale Linux workstation environments

• Experience implementing and maintaining DISA STIG compliance using Red Hat Satellite and Ansible

• Experience integrating Linux systems with Active Directory or LDAP

• Familiarity with virtualization platforms (VMware, KVM)

• Scripting experience (Bash or Python) to support automation initiatives

• Experience supporting classified networks or cross-domain environments

• Experience in high-availability or 24/7 mission environments

Ready to make an impact? Start your meaningful career journey with Leidos—submit your resume today!

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