Senior Network Administrator

Relha LLC; Odenton (MD); On-site; USD 92,000 - 167,000; Full time

Job summary

Leidos is seeking a Senior Network Administrator on a DISA contract, 100% on-site at Fort Meade, MD. The role supports JWICS with network asset configuration, security enhancements, and system administration across Linux and Windows environments.

The candidate should hold a TS/SCI clearance and DoD 8140 certification, with CCNA/CCNP or equivalent. Responsibilities include architecture improvements, documentation, and collaboration on global network projects.

Qualifications

• Bachelor's degree in a relevant technical discipline with 8+ years of related experience, or equivalent experience.

Responsibilities

• Works independently to configure assets including switches, load balancers, routers, and firewalls.
• Maintains and updates Cisco, Juniper, and Dell network assets with security measures.
• Creates and maintains system documentation, configuration management, and change management.
• Completes checklists and manages devices to meet cybersecurity controls.
• Assists in global network architecture upgrade projects with technical insight and timelines.
• Implements recurring security requirements on network devices.
• Coordinates troubleshooting with external partners when needed.
• Uses Linux and Windows system admin skills to manage network assets.
• Provides architectural and topology recommendations for efficiencies.

Skills

Linux

Windows

Network Admin

TS/SCI clearance

CCNA/CCNP

Security certifications

Education

Bachelor’s degree in a technical discipline

Tools

ServiceNow

Remedy

ITSM

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.

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.