Systems Engineer III

Position: Systems Engineer III

Location: Melbourne FL (Patrick SFB)

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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 thingfor 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 worlds toughest security challenges for customers with cant fail missions.

Leidos Defense Sector is seeking a Systems Engineer III (Linux) to support the Air Force Technical Applications Center (AFTAC) U.S. National Data Center (US NDC). The US NDC operates a missioncritical highavailability system within secure DoD environments supporting national security objectives.

This role focuses on system engineering platform sustainment cybersecurity compliance and DevSecOps integration across Linux and Solaris environments. The selected candidate will support COTS application installation and lifecycle management system hardening patching upgrades and 247 operational troubleshooting across classified and unclassified infrastructures. This is an opportunity to directly support a critical national security mission while ensuring system resilience cybersecurity compliance and operational excellence.

Primary Responsibilities:

• Engineer administer and sustain enterprise Linux and Solaris systems supporting mission applications

• Install configure upgrade and maintain Commercial Off-The-Shelf (COTS) software in secure environments

• Lead system patching upgrades and vulnerability remediation to maintain cybersecurity compliance

• Implement and maintain system hardening in accordance with DISA STIGs RMF controls DoD cybersecurity policies and Zero Trust architecture principles

• Troubleshoot complex system application and infrastructure issues in a 24x7 mission environment performing root-cause analysis and resolution

• Develop and maintain automation scripts and configuration management solutions (i.e. Ansible) to improve system consistency compliance and deployment repeatability

• Collaborate with software database network and cybersecurity teams to ensure reliable system integration

• Support deployment pipelines and DevSecOps practices for system and application releases

• Maintain system documentation configuration baselines and operational procedures

• Participate in on-call rotation and operational sustainment activities

Basic Qualifications:

• Bachelors degree in Information Technology Computer Science or related disciple with 4 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)

• Experience administering Linux (RHEL or equivalent) systems in enterprise environments

• Experience installing configuring and upgrading COTS software applications

• Direct experience managing systems with Red Hat Satellite

• Experience developing and maintaining Ansible automation for configuration management

• Familiarity with Linux system hardening and security compliance practices

• Strong troubleshooting experience in complex integrated systems

• Experience with system patching lifecycle management and vulnerability remediation

• Familiarity with DISA STIGs RMF and DoD cybersecurity and Zero Trust acrhitecture compliance requirements

Preferred Qualifications:

• Experience in DevSecOps environments and CI/CD pipeline integration

• Experience with automation tools (Ansible Bash Python)

• Experience with virtualization platforms (VMware or similar)

• Experience with containerization and orchestration technologies including Docker and Kubernetes in a production environment

• Experience supporting Oracle or other enterprise database environments

• Experience modernizing legacy systems within secure environments

• Experience supporting or administering Solaris systems

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Original Posting:

Pay Range:

The Leidos pay range for this job level is a general guideline onlyand not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job education experience knowledge skills and abilities as well as internal equity alignment with market data applicable bargaining agreement (if any) or other law.