Senior Linux SysAdmin – Security & Automation (TS/SCI)

Leidos; Columbia (MD); On-site; USD 110,000 - 150,000; Full time

Benefits offered by this job

Sign-on Bonus

Job summary

Leidos is seeking a Linux Systems Administrator to support mission-critical Dev/Test/Prod environments with hands-on Linux experience. You will configure, secure, monitor, and optimize Linux-based infrastructure, leveraging Ansible, Bash, and Python for automation. A TS/SCI clearance is required for this role.

The position emphasizes change-control adherence, documentation, and on-call rotation to ensure continuous operations in a high-stakes government-related environment.

Qualifications

• Bachelor’s degree in a technical field with 5 years of related experience (or 5 extra years in lieu).
• Extensive hands-on Linux administration in RHEL-like environments.
• Automation experience with Ansible, Bash, and Python.

Responsibilities

• Administer, configure, secure, monitor, and troubleshoot RHEL/Linux systems across dev/test/prod environments.
• Lead troubleshooting and root-cause analysis across OS, apps, storage, auth, perf, and network.
• Manage Linux lifecycle activities: accounts/permissions, patching, packages, services, upgrades.
• Implement and maintain Linux security controls, baselines, compliance.
• Develop and maintain automation/configuration-management using Ansible, Bash, Python.
• Research and resolve complex issues, collaborate with SAs/DBAs/SWEs/SEs.
• Develop docs, runbooks, change records; participate in on-call support.

Skills

Linux Admin

RHEL

Automation

Ansible

Bash

Python

Networking

TS/SCI

AWS

Change Control

Education

Bachelor's degree in a technical field

Tools

Jira

Confluence

Splunk

CloudWatch

Nessus

Git

Terraform

CloudFormation

Kubernetes

Job description

Leidos is seeking a Linux Systems Administrator to support mission-critical Dev/Test/Prod environments with hands-on Linux experience. You will configure, secure, monitor, and optimize Linux-based infrastructure, leveraging Ansible, Bash, and Python for automation. A TS/SCI clearance is required for this role.

The position emphasizes change-control adherence, documentation, and on-call rotation to ensure continuous operations in a high-stakes government-related environment.