Onsite Linux Systems Engineer – Ansible & DoD

Leidos; Oklahoma City (OK); On-site; USD 87,000 - 157,000; Full time

Job summary

Leidos is seeking a Linux System Engineer to design, deploy, maintain, and optimize enterprise infrastructure supporting classified mission systems in a 100% on-site role in Oklahoma City. You’ll work with cross-functional teams on deployments, automation, and lifecycle management to ensure reliability and security across DoD-aligned environments.

Responsibilities include patching, monitoring, scalability, and DoD-compliant security hardening, with focus on automation using Ansible and

Qualifications

• US Citizenship with Top Secret clearance and SCI eligibility
• DoD 8140 Intermediate or DoD 8570 IAM Level II certification
• Foundational experience with AWS and Azure
• Experience administering Linux and Windows environments with networking fundamentals
• Self-starter with strong communication and problem-solving skills

Responsibilities

• Install, configure, maintain, and patch Linux servers (physical and virtual)
• Monitor, troubleshoot, and optimize system performance for availability
• Manage OS updates and security hardening per DoD policies
• Support backups, disaster recovery, and data integrity
• Administer system access and security configurations
• Collaborate with teams for deployments and modernization
• Maintain system documentation and procedures
• Respond to incidents related to performance, availability, and security
• Promote knowledge sharing and continuous improvement

Skills

Ansible

Linux admin

Windows admin

IT security

Networking

Education

Bachelor’s degree

Master’s degree

Tools

Red Hat Satellite

VMware ESXi

Hyper-V

ServiceNow

Jira Service Management

Job description

Leidos is seeking a Linux System Engineer to design, deploy, maintain, and optimize enterprise infrastructure supporting classified mission systems in a 100% on-site role in Oklahoma City. You’ll work with cross-functional teams on deployments, automation, and lifecycle management to ensure reliability and security across DoD-aligned environments.

Responsibilities include patching, monitoring, scalability, and DoD-compliant security hardening, with focus on automation using Ansible and