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Job Details

Linux Systems Administrator


Linux Systems Administrator


Odenton, Maryland, United States


The Defense Group at Leidos seeks a Linux Systems Administrator for the Global Solutions Management – Operations II (GSM-O II) contract. This position will support the sustainment and ongoing development of the DISA’s Enterprise Network Engineering Tools (ENET) solution, providing Tier III support for server and application infrastructure under general supervision as well as its eventual migration to AWS.

While this role is primarily remote one must live within commuting distance to Scott AFB, IL (St. Louis, MO) or Fort Meade, MD for on-site support. This position is about 50% remote.

Primary Responsibilities

  • Work independently to ensure the reliability, availability, and security of the ENET solution 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 ENET solution, 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 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.
  • Lead planning and migration of ENET infrastructure and applications from the Data Center environment to the AWS cloud.
  • 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.
  • 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 within a technical area.
  • Typically responsible for coaching and reviewing the work of lower level technical staff.

Basic Qualifications

  • Requires deep understanding of and ability to apply principles, theories, and concepts of technical domain and has broad understanding of other related specialty areas.
  • Strong background in Linus 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.
  • The candidate must have bachelor’s degree with 4-8+ years of prior relevant experience or a Master’s Degree with 2-6+ years of prior relevant experience. Will consider work experience in lieu of a degree.
  • Requires knowledge of and ability to apply advanced technical principles, theories, and concepts.
  • The candidate must have an active Secret clearance.
  • Must have CompTIA Security+ Certification or its equivalence.
  • Be able to work in a fast-paced environment and must be able to work independently.

Preferred Qualifications

  • AWS Experience
  • Jira or similar ticket tracking system
  • Knowledge of security hardening procedures for Linux
  • Experience with VM environments
  • Excellent communication skills
  • Networking Skills


Pay Range:

Pay Range $66,300.00 - $102,000.00 - $137,700.00

The Leidos pay range for this job level is a general guideline only and not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.