Senior Network Administrator

Leidos Holding$116K — $210K *
Aerospace & Defense
11 - 15 years of experience
Job Overview by Ladders

Qualifications

  • Bachelor's degree in a relevant technical discipline (or equivalent experience) with 12+ years in the field.
  • Active DoD Top Secret Security Clearance, with ability to obtain SCI clearance.
  • 3+ years of experience with Linux and/or Windows systems.
  • Possession of DoD 8140 certification for Network Operations Specialist (e.g., SEC+, CEH).
  • CCNA/CCNP or equivalent certification required (can be obtained within 90 days of hire).

Responsibilities

  • Configure network assets including switches, routers, and firewalls independently.
  • Perform maintenance, troubleshooting, and security implementations on Cisco, Juniper, and Dell devices.
  • Maintain accurate system, configuration, and change management documentation.
  • Manage cyber security controls as per requirements using checklists.
  • Assist in global network architecture project implementations by providing technical insights.
  • Implement recurring security measures on network devices.
  • Coordinate with external partners for collaborative troubleshooting efforts.

Benefits

  • Comprehensive health benefits for you and your family.
  • Retirement savings with company match.
  • Opportunity to work on impactful projects with a leading defense contractor.
  • Continuous learning and professional development opportunities.
  • Work in a dynamic team environment at a premier facility.
Full 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 12+ 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.


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 $116,350.00 - $210,325.00

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.

About Leidos Holding

Leidos Holding Careers

Joining Leidos Holding presents an unparalleled opportunity to advance one's career with a leader in innovation and technology. The company offers a plethora of job opportunities aimed at fostering professional growth and development in a diverse and inclusive environment.

Explore Career Opportunities

Leidos Holding is actively seeking skilled professionals who are passionate about leveraging their expertise to drive innovation and leadership in their fields. With a variety of open positions, Leidos Holding provides a platform for individuals to challenge themselves in a dynamic work environment.

Innovation and Professional Growth

At Leidos Holding, innovation is at the core of everything they do. Employees are encouraged to think creatively and push boundaries. The company supports this drive for innovation through comprehensive professional development and diversity training programs that are designed to enhance skills and foster leadership.

Commitment to Diversity and Inclusion

Leidos Holding is committed to creating a workplace where diversity is not only recognized but celebrated. With a culture that values and promotes diversity, Leidos Holding ensures that all team members have the opportunity to contribute, learn, and grow.

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For those starting their career, Leidos Holding offers internship programs that provide a robust foundation in the industry. Internships are a great way to develop essential skills, gain valuable work experience, and build professional networks.

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Employees at Leidos Holding enjoy a range of benefits designed to support their professional and personal lives. The company culture is built on a foundation of respect and integrity, providing a supportive and collaborative environment where every team member is valued.

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Leidos Holding encourages its employees to engage in networking within the company to discover new opportunities for career advancement. The leadership team at Leidos Holding is dedicated to supporting employees in their career paths with ample opportunities for networking and growth.

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