Systems Administrator

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 has a new and exciting opportunity for a Systems Administrator in our Intelligence Sector, Cyber & Analytics Business Area (CABA) . Our talented team is at the forefront in Security Engineering, Computer Network Operations (CNO), Mission Software, Analytical Methods and Modeling, Signals Intelligence (SIGINT), and Cryptographic Key Management. At Leidos , we offer competitive benefits , including Paid Time Off, 11 paid Holidays, 401K with a 6% company match and immediate vesting, Flexible Schedules, Discounted Stock Purchase Plans, Technical Upskilling, Education and Training Support, Parental Paid Leave, and much more. Join us and make a difference in National Security!

This position is eligible for a $10k sign on bonus!

Job Summary

The ideal candidate brings deep hands-on Linux administration experience and is comfortable supporting mission-critical Development, Test, and Production environments using command-line tools, system logs, automation, and established change-management processes. The Linux Systems Administrator will serve as a senior technical resource responsible for system configuration, automation, security hardening, vulnerability remediation, monitoring, troubleshooting, and continuous improvement of Linux-based infrastructure and operational practices.

Primary Responsibilities

• Administer, configure, secure, monitor, and troubleshoot RHEL/Linux systems across Development, Test, and Production environments supporting mission-critical workloads.
• Lead troubleshooting and root-cause analysis across operating systems, applications, storage, authentication, performance, and network connectivity using Linux command-line tools, system logs, and monitoring platforms.
• Manage Linux system lifecycle activities including account and permission administration, patching, package management, software installation, service configuration, upgrades, and ongoing system maintenance.
• Implement and maintain Linux security controls, hardening standards, vulnerability remediation, configuration baselines, and compliance requirements.
• Develop and maintain automation and configuration-management solutions using Ansible, Bash, Python, or comparable technologies to improve consistency, reliability, and operational efficiency.
• Independently research and resolve complex technical issues while collaborating with SAs, DBAs, SWEs, SEs, testers, and other team members to develop sustainable solutions and promote knowledge sharing across the team.
• Develop and maintain technical documentation, SOPs, operational runbooks, system configurations, and change records, and participate in rotational on-call support for the mission environment.

Basic Qualifications

• Bachelor's degree in a technical discipline from an accredited college or university and (Five) 5 years of related experience. Five (5) years of additional related experience may be substituted for a bachelor's degree.
• Extensive hands‑on Linux systems administration experience, including RHEL or comparable enterprise Linux distributions, supporting complex production environments.
• Experience administering Linux systems including accounts and permissions, package management, patching, system services, storage, authentication, system configuration, and performance monitoring.
• Hands‑on experience with automation or configuration management using Ansible or comparable technologies, along with Bash and/or Python scripting.
• Strong Linux troubleshooting skills and knowledge of networking fundamentals including DNS, TCP/IP, IP addressing, ports, routing, and firewalls.
• Experience with Linux security hardening, vulnerability remediation, configuration management, and formal change-control processes.
• Experience with AWS, including EC2, ECS (Elastic Container Service), EKS (Elastic Kubernetes Service), Systems Manager (SSM), CloudFormation, and associated monitoring and operational services.
• Security Clearance Requirement: Active TS/SCI with polygraph.

Desired Qualifications

• Advanced experience with Ansible and RHEL 9, including automated configuration, provisioning, and repeatable system administration.
• Experience with AWS, including EC2, Systems Manager (SSM), CloudFormation, and associated monitoring and operational services.
• Experience with FIPS, SELinux, fapolicy, STIG requirements, vulnerability remediation, and Linux security controls.
• Experience with PKI, including certificates, keys, trusted authorities, and certificate revocation lists.
• Experience with Git-based workflows, Terraform/CloudFormation, Salt, or other infrastructure/configuration automation technologies.
• Experience supporting Kubernetes/container platforms and monitoring, logging, or security technologies such as Splunk, Elastic, CloudWatch, SIEM solutions, or Nessus.
• Experience with Jira and Confluence and supporting Linux infrastructure within secure government, Intelligence Community, DoD, or similarly regulated environments.