Senior Network Administrator

Leidos LLC; Fort Meade (MD); On-site; USD 92,000 - 167,000; Full time

Job summary

Leidos seeks a Senior Network Administrator for a DISA contract, performing configuration of switches, routers, load balancers, and firewalls on-site at Fort Meade, MD. The role supports JWICS and requires DoD TS with SCI eligibility, plus strong Linux/Windows administration skills.

The candidate will maintain documentation, manage change control, and drive security measures across Cisco, Juniper, and Dell assets while collaborating on global architecture upgrades and external partner

Qualifications

• Bachelor's degree in a technical discipline with 8+ years of related experience, or equivalent experience.
• Active DoD Top Secret clearance and ability to obtain DoD Top Secret with SCI.
• At least 3 years Linux and/or Windows familiarity.
• DoD 8140 certification supporting Network Operations Specialist (e.g. SEC+, CEH).
• CCNA/CCNP or equivalent OR ability to obtain within 90 days of start date.
• ITIL v3 Foundation certified is preferred.

Responsibilities

• Configure network assets including switches, load balancers, routers, and firewalls.
• Maintain and update Cisco, Juniper, and Dell network assets; implement security measures.
• Create and maintain system documentation, configuration management, and change management.
• Complete checklists and manage devices to support cyber security controls.
• Assist in global network architecture upgrade projects with timelines and resources.
• Implement recurring security requirements on network devices.
• Coordinate troubleshooting with external partners; communicate as needed.
• Use Linux and Windows to navigate systems while managing network assets.

Skills

Linux familiarity

Windows familiarity

Network asset management

Documentation & CM

Independent work

Education

Bachelor's degree in a relevant technical discipline

DoD Top Secret clearance

DoD 8140 certification for Network Operations Specialist

CCNA/CCNP or equivalent

ITIL v3 Foundation certified

Tools

Cisco switches

Juniper

Dell network assets

BM/ServiceNow/ITSM/Remedy ticketing

Virtual environments

Job description

The Digital Modernization Sector at Leidos has a career opening for a Senior Network Administrator on a DISA contract. This role is 100% on the customer site at Fort Meade, MD. 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 8140 certification supporting Network Operations Specialist (e.g. SEC+, CEH, etc.)
• Currently possess CCNA/CCNP or equivalent OR the ability to obtain the certification within 90 days of start date

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
• GSMO

If you're looking for comfort, keep scrolling. At Leidos, we outthink, outbuild, and outpace the status quo - because the mission demands it. We're not hiring followers. We're recruiting the ones who disrupt, provoke, and refuse to fail. Step 10 is ancient history. We're already at step 30 - and moving faster than anyone else dares.

Original Posting: August 5, 2026 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 $92,300.00 - $166,850.00 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.

Leidos is an industry and technology leader serving government and commercial customers with smarter, more efficient digital and mission innovations. Headquartered in Reston, Virginia, with 47,000 global employees, Leidos reported annual revenues of approximately $17.2 billion for the fiscal year ended January 2, 2026. For more information, visit www.Leidos.com.

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 Leidos will never ask you to provide payment-related information at any part of the employment application process. And Leidos will communicate with you only through emails that are sent from a Leidos.com email address. If you receive an email purporting to be from Leidos that asks for payment-related information or any other personal information, please report the email to [e-mail].

Commitment and 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.