Systems Engineer (Linux)

Leidos•Melbourne, FL

9d•$69,550 - $125,725

About The Position

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. 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.

Requirements

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

Nice To Haves

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

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.