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.
At Leidos, we don’t want someone who "fits the mold"—we want someone who melts it down and builds something better. This is a role for the restless, the over-caffeinated, the ones who ask, “what’s next?” before the dust settles on “what’s now.”
If you’re already scheming step 20 while everyone else is still debating step 2… good. You’ll fit right in.
Original Posting:January 13, 2026For 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.
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.
Top Skills
What We Do
We Are Leidos
For 50 years we have been tackling some of the biggest problems that face our nation and our world.
OUR MISSION
Through our culture of innovation and history of performance, we develop deep customer trust built on integrity and create enduring solutions that improve our world. Leidos is a science and technology solutions leader working to address some of the world’s toughest challenges in the defense, intelligence, homeland security, civil, and healthcare markets. The company’s 43,000 employees support vital missions for government and commercial customers. Headquartered in Reston, Va., Leidos reported annual revenues of approximately $11.09 billion for the fiscal year ended January 3, 2020.
Leidos was cited for the meaningful work employees perform that is challenging, impactful, and aligned with our customers’ missions as reasons professionals want to work and stay at our company. Leidos has also been named to lists including Forbes’ Best Employers for Diversity, Forbes’ America’s Best Employers for Women, Military Times Best for Vets Employers, and Ethisphere Institute’s World's Most Ethical Companies®.
Employees enjoy career enrichment opportunities available through mobility and development and experience rewarding relationships with supportive supervisors and talented colleagues and customers. Employees appreciate our flexible work environment, allowing for and encouraging a true work-life balance. Our professionals are also excited about our Employee Resource Groups, like the newly launched Collaborative Outreach with Remote and Embedded Employees (CORE), which strives to create an environment where every employee, regardless of location, feels fully engaged as a valued employee of Leidos.
Your most important work is ahead.
