Onsite Linux & Windows Systems Admin • Secret Clearance

Leidos; Beavercreek (OH); On-site; USD 87,000 - 157,000; Full time

Job summary

Leidos is seeking a Linux/Windows System Administrator to support and secure complex classified environments. The role covers administering Windows and Linux systems across physical, virtual, and air-gapped networks, ensuring system availability and compliance with security controls.

You will perform incident resolution, patching, and automation using PowerShell, Bash, and Ansible, while contributing to documentation and recovery procedures in a DoD environment.

Qualifications

• Experience administering Windows Server and Linux in secure or air-gapped environments.
• Experience implementing DISA STIGs, SCAP and NIST 800-53 controls.
• Experience with Active Directory, DNS, DHCP and file servers.

Responsibilities

• Administer and maintain Windows Workstations, Windows Server, and Linux systems across physical, virtual, and air-gapped environments.
• Perform Tier 2 incident resolution and root-cause analysis in collaboration with engineering and cybersecurity teams.
• Implement patching, vulnerability remediation, and configuration management.
• Automate tasks using PowerShell, Bash, Ansible; manage OS images and deployment.
• Maintain monitoring, logging, backup, recovery, and runbooks; assist with access control.

Skills

Linux systems

Windows systems

Security compliance

Automation

Education

Bachelor's degree in a technical field

Tools

Ansible

PowerShell

Bash

PXE/Kickstart

Job description

Leidos is seeking a Linux/Windows System Administrator to support and secure complex classified environments. The role covers administering Windows and Linux systems across physical, virtual, and air-gapped networks, ensuring system availability and compliance with security controls.

You will perform incident resolution, patching, and automation using PowerShell, Bash, and Ansible, while contributing to documentation and recovery procedures in a DoD environment.