Sr. Network Administrator

Leidos; Illinois; On-site; USD 89,000 - 163,000; Full time

Job summary

Leidos is seeking a Senior Network Administrator to support a DISA contract at Scott AFB, IL. The role involves performing asset configurations, security implementations, and providing technical expertise for network infrastructure upgrades. Candidates should have extensive experience in network administration and hold an active DoD Top Secret Clearance.

Qualifications

• 8+ years of related experience or significant experience in lieu of degree.
• Active DoD Top Secret Security Clearance.
• Familiarity with Linux and/or Windows (3+ years).
• DoD 8750 certification at IAT level II.

Responsibilities

• Configuration of network assets including switches, routers, and firewalls.
• Routine maintenance, troubleshooting, and implementing security measures.
• Documenting system configurations and managing change efforts.

Skills

Configuration of assets

Troubleshooting

Security implementation

System Administration

Education

Bachelor's degree in a relevant technical discipline

Job description

The Defense group at Leidos has a career opening for a Senior Network Administrator on a DISA contract. This role is primarily on the customer site at Scott AFB, IL. Administrator will provide support for assigned systems supporting Joint Worldwide Intelligence Communications System (JWICS).

PRIMARY RESPONSIBILITIES:

• Works independently to perform configuration of assets to include switches, load balancers, routers, and Firewalls
• Perform routine maintenance, troubleshooting, updates and implement security measures on Cisco Juniper, and Dell network assets.
• Create and maintain system documentation, configuration management, and change management efforts accurately and timely
• Complete checklists and manage devices to mitigate cyber security controls and measures as required.
• Assist in the implementation of global projects for Network architecture upgrades by providing technical insight, projected necessary actions, timelines, and resource availability
• Implement recurring security requirements on network devices
• Communicate with external partners to coordinate troubleshooting efforts where required.
• Utilize moderate System Administration skills in both Linux and Windows environments to navigate current systems while managing network assets.
• Provide architectural and topology recommendations where efficiencies can be made.

BASIC QUALIFICATIONS

• Bachelor's degree in a relevant technical discipline with 8+ years of overall related experience, or additional years of experience will suffice in lieu of degree
• Active DoD Top Secret Security Clearance and ability to obtain a DoD Top Secret with SCI.
• At least 3 years Linux and/or Windows familiarity
• Currently possess DoD 8750 certification at IAT level II, e.g. Security+ce or higher.
• Currently possess an active Top Secret security clearance with the ability to acquire a Top Secret/SCI clearance.

PREFERRED QUALIFICATIONS:

• Integration of Network Management (NM) and Element Management (EM) systems with network performance, trouble ticketing, and security subsystems highly desired.
• Experience with a ticketing system such as BM, Service Now, ITSM or Remedy.
• ITIL v3 Foundation certified
• Experience working with virtual environments.

Original Posting:
June 13, 2025
For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above.

Pay Range:
Pay Range $89,700.00 - $162,150.00

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.