Leidos · 4 hours ago
Linux Systems Administrator
Scott AFB, IL
Full-time
Onsite
Senior Level, Lead/Staff
$92K/yr - $167K/yr
8+ years expLeidos is an industry and technology leader serving government and commercial customers with smarter, more efficient digital and mission innovations. They are seeking a Linux Systems Administrator to support the Global Solutions Management – Operations II contract at DISA, focusing on the reliability, availability, and security of systems within the Defense Information System Network.
ComputerGovernmentInformation ServicesInformation TechnologyNational SecuritySoftware
No H1B
Security Clearance RequiredU.S. Citizen Only
Responsibilities
Work independently to ensure the reliability, availability, and security by proactively monitoring the system, troubleshooting, and resolving issues to ensure high availability and continuity of operations
Be able to work in a fast-paced environment and must be able to work independently
Maintain configuration management and baseline control of development, test, pre-production, and production environments
Conduct regular security scans, analyze results, and implement resolutions including testing of new hardware and software and ensure compliance with DISA STIGs
Operate and maintain the environments, including patching of operating systems and COTS/FOSS/GOTS
Perform and test regular backups
Monitor and tune system and network performance, including RHEL and VMWare systems, for optimal system availability
Configure, manage, and maintain components of the SDN solution (application servers, load balancers, databases, operating systems, etc.)
Deploy SDN and ENET systems in the Lab environment, integrate with other systems, perform testing and validation
Manage, track, and maintain configuration items including licenses, SSL certificates and the hardware/software baseline
Support ENET baseline deployments, upgrades and updates to the production environment including the installation and configuration of new software and hardware
Configure and maintain applications including Juniper Nortstar/Routing Director in both the SDN on premises and GMS cloud based environments
Create, maintain, and implement detailed documentation and maintain standard operating procedures
Perform trend analysis on component failures, network/node outages, and system performance parameters
Interact with software and hardware vendors to evaluate vendor products and make recommendations to purchase hardware and software
Work with network engineers and developers to troubleshoot environment issues as necessary
Train new hires on the environments and applications
Identify and propose solutions for issues or needed tasks
Escalate support issues to vendors as necessary and coordinate resolution
Manage access including creation and management of user and service accounts
Provide support on a M-F business hours schedule, also responsible for on-call, extended hour, and weekend support as required by mission or emergency situations
Responsible for entire projects or processes spanning multiple technical areas
Manages large projects or processes with moderate impact on the achievement of sub-family results
Communicates with internal team members across multiple areas and client team members
May communicate with parties external to the organization (e.g., sub-contractors, vendors, etc.)
Works to influence project/team leaders regarding solution design, process and/or approaches
Qualification
Required
Expert knowledge of Linux and ability to apply advanced technical principles, theories, and concepts
Strong background in Linux or UNIX server setup, deployment, and maintenance
Significant experience examining error logs, systems performance data
Familiar with best practices and techniques to maintain and enhance information security
Bachelor's Degree with 8-12+ years of prior relevant experience or a Master's Degree with 6-10+ years of prior relevant experience. Will consider work experience in lieu of a degree
Active Secret clearance
CompTIA Security+ Certification or its equivalence
Be able to work in a fast-paced environment and must be able to work independently
Preferred
AWS Experience
Jira or similar ticket tracking system
Knowledge of security hardening procedures for Linux
Experience with VM environments
Excellent communication skills
Networking Skills
Benefits
Health and Wellness programs
Income Protection
Paid Leave
Retirement
Company
Leidos
Leidos is a Fortune 500® innovation company rapidly addressing the world’s most vexing challenges in national security and health.
10001+ employees
Funding
Current Stage
Public CompanyTotal Funding
unknown2025-02-20Post Ipo Debt
2013-09-17IPO
Leadership Team
James Carlini
Chief Technology Officer
Theodore Tanner
Chief Technology Officer
Recent News
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2025-12-16
2025-12-16
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