Linux System Administrator

Leidos Corporate Information Security team, within the Digital Modernization sector, currently has an opening for a Linux Systems Administrator in our Omaha NE office. This position is an exciting opportunity to use your experience providing advanced computing solutions in a heterogeneous environment.  We use a wide array of Linux and Windows systems in a tightly integrated environment with a focus on security and high performance computing.  If you want to work in a diverse environment that allows you to get into every aspect of supporting complex computing systems this is a great opportunity!

Clearance Requirement: You must currently hold an active Secret clearance with eligibility to be cleared for Top Secret and Special Access Programs.

Primary Responsibilities

• Configuration, setup and maintenance of numerous air-gapped Information Systems (IS) and networks 

• Verify and maintain security configuration of the multiple Information Systems 

• Secure and maintain all components IAW established Security Technical Implementation Guides (STIG) and customer directives 

• Manage daily break/fix scenarios, updates, backups, monitoring and user management 

• Patch and anti-virus definition management 

• Hardware troubleshooting (COTS PC, printer, networks, and encryption hardware) 

• Monitor customer request and tasking to ensure requirements are addressed in a timely manner according to priority 

• Strong desire to adhere to best practices and provide the highest quality of service and support. 

Basic Qualifications

• Bachelors’ degree and 4-8 years of experience, Associate degree and 6-8 years or High School diploma and 8 or more years of experience may be considered in lieu of degree.

• Current DoD 8140/8570 compliant IA certification for IAT II  (Security+ce or higher)

• Must hold current Secret clearance with eligibility to obtain Top Secret and Special Access Programs clearance. 

• Hands-on experience in Linux Server and workstation environments.

• Experience in the design, implementation, and sustainment of Virtualized Machine (VM) architecture 

• Experience with system configuration and apply security controls under Risk Management Framework.

• Demonstrated understanding of computer network concepts (network hardware, cable management, IP address management).

• Working knowledge of Windows operating systems.

• Excellent customer service skills and clear communications both written and oral 

• Comfortable working in an environment without immediate supervision 

Preferred Qualifications

• Experience with Red Hat Satellite.

• Experience with container management to include Kubernetes, Podman, and Docker 

• Experience working with cloud systems (Azure, AWS)

• Understanding of Special Access Program (SAP) Information Systems (IS) requirements 

• Experience with IS implementation as defined in the Joint Special Access Program Implementation Guide (JSIG) 

• Understanding of DevOps best practices and system development lifecycle automation 

• Experience in Kubernetes and other DevOps container management methodologies and automation 

• Current experience supporting Special Access Program (SAP) Information Systems (IS) 

• Detailed experience with the Risk Management Framework 

• Experience with NIST 800-53 

• Documented Computing Environment (CE) training 

• Experience in ACAS or Nessus vulnerability scanning 

• Knowledgeable in audit log reduction tools (Graylog or Splunk) 

• Advanced DoDI 8570 certification

• Shell Scripting 

• Windows or Linux Certifications 

• In-depth Hardware Experience 

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Original Posting:

March 9, 2026

Pay Range:

Pay Range $87,100.00 - $157,450.00

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.