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Network Administrator

Job in Herndon, Fairfax County, Virginia, 22070, USA
Listing for: Cornerstone Defense LLC
Full Time position
Listed on 2026-09-16
Job specializations:
  • IT/Tech
    Cybersecurity, Systems Engineer
Salary/Wage Range or Industry Benchmark: 150000 - 220000 USD Yearly USD 150000.00 220000.00 YEAR
Job Description & How to Apply Below

Network Administrator

Herndon, VA/Chantilly, VA

Active TS/SCI with Polygraph

Salary Range: $150,000 - $220,000

Company Overview

Cornerstone Defense is the Employer of Choice within the Intelligence, Defense, and Space communities of the U.S. Government. Realizing early on that our most prized assets are our employees, we continually focus our attention on improving the overall work/life experience they have supporting the mission. Our Team is pushed every day to use their industry leading knowledge to provide end-to-end solutions to combat our nation’s toughest and most secure problems.

If you are looking for a place to not only be professionally challenged, but encouraged and supported by a company that cares, don’t look any further than Cornerstone Defense.

Job Responsibilities
  • Experience with maintenance of Cisco switches, routers, wireless, command line interface and network protocols to provide team with technical support in the following areas in support of new program and existing program expansion as part of existing contract:
    • Lead the identification, analysis and documentation of requirements for both classified and unclassified network transport technologies and services (e.g., voice, video, data) based on customer goals, objectives, cost and security constraints.
    • Lead and organize the creation and documentation of designs that conform to architectural and security standards, to meet customer requirements, using industry best practices and tools based on years of experience in leading network security projects involving routers, switches, firewalls, access control lists and COMSEC equipment.
    • Prepare and deploy complex implementation packages per Boeing standards.
    • Lead the performance of complex preventative, proactive and reactive maintenance in order to meet service restoration and network availability objectives, using network analysis and monitoring tools, and writing scripts to collect network device status and to perform software upgrades.
    • Research, develop, document and deploy emerging technologies and techniques, determining proper integration into existing systems to meet customer needs, as directed.
    • Lead and coordinate implementation planning for multi-technology insertion projects, using established project management methodologies for the purpose of controlling costs and ensuring adherence to project plan.
Required Skills
  • Security+ certification required.
Company Benefits

Cornerstone Defense offers a comprehensive list of benefits, designed to give employees and their families several options to choose from when selecting benefits that best fit their needs. These offerings include not only a full suite of the traditional Medical/Dental/Vision insurances, but also a number of other benefits and perks to include, but not limited to: A 401(K) plan with a company match, tuition and training assistances, paid vacation/leave, a fitness reimbursement program, college savings plan, commuter benefits, financial advisory services, flex spending accounts, health savings accounts, STD/LTD coverage, life and AD&D insurance, employee assistance programs, life financial planning assistance, and legal resources.

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