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Job #: R-00116896-OTHLOC-PL-2D2504
Location: Scott Air Force Base, IL
Category: Network Administration and Ops
Schedule (FT/PT): Full Time
Travel Required: No
Shift: Day
Remote Type: Hybrid Remote
Clearance: Secret
Referral Eligibility: Eligible
Referral Bonus Amount: $3000
Group: Defense

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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 and the Layer 2 Layer 3 VPN SDN.

While this role does offer the ability for remote work, 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 and 50% on site.

Primary 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 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 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.

Basic Qualifications

  • Requires expert knowledge of and ability to apply advanced technical principles, theories, and concepts.
  • 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 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.
  • Requires expert 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 $84,500.00 - $130,000.00 - $175,500.00

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.

About Leidos

Leidos is a Fortune 500® technology, engineering, and science solutions and services leader working to solve the world’s toughest challenges in the defense, intelligence, civil, and health markets. The company’s 46,000 employees support vital missions for government and commercial customers. Headquartered in Reston, Virginia, Leidos reported annual revenues of approximately $14.4 billion for the fiscal year ended December 30, 2022.  For more information, visit

Pay and Benefits

Pay and benefits are fundamental to any career decision. That's why we craft compensation packages that reflect the importance of the work we do for our customers. Employment benefits include competitive compensation, Health and Wellness programs, Income Protection, Paid Leave and Retirement. More details are available here.

Securing Your Data

Beware of fake employment opportunities using Leidos’ name. Leidos will never ask you to provide payment-related information during any part of the employment application process (i.e., ask you for money), nor will Leidos ever advance money as part of the hiring process (i.e., send you a check or money order before doing any work). Further, Leidos will only communicate with you through emails that are generated by the automated system – never from free commercial services (e.g., Gmail, Yahoo, Hotmail) or via WhatsApp, Telegram, etc. If you received an email purporting to be from Leidos that asks for payment-related information or any other personal information (e.g., about you or your previous employer), and you are concerned about its legitimacy, please make us aware immediately by emailing us at [email protected].

If you believe you are the victim of a scam, contact your local law enforcement and report the incident to the U.S. Federal Trade Commission.

Commitment to Diversity

All qualified applicants will receive consideration for employment without regard to sex, race, ethnicity, age, national origin, citizenship, religion, physical or mental disability, medical condition, genetic information, pregnancy, family structure, marital status, ancestry, domestic partner status, sexual orientation, gender identity or expression, veteran or military status, or any other basis prohibited by law. Leidos will also consider for employment qualified applicants with criminal histories consistent with relevant laws.

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