• Location: McLean, Virginia
  • Type: Contract
  • Job #1802

Title: Network Design Engineer

Location: Herndon, VA


*Clearance: Active TS/SCI w/ Polygraph needed to apply *



Company Overview:

Cornerstone Defense, in partnership with our military, intelligence, and civil government customers, supports U.S. operations worldwide through the use of many different types of intelligence, satellite, and cyber technologies. Cornerstone’s Intelligence Sector provides solutions to the United States Government for information collection, operations, exploitation and dissemination, and research activities. Our Team specializes in software development, cloud architecture, systems and network engineering, systems integration, agile management, as well as targeting operations and intelligence analysis. Our support to our mission customers includes cyber network operations, exploitation and defense, signals intelligence, human intelligence, and critical missions and networks.


  • Designs and plans network communications systems.
  • Provides specifications and detailed schematics for network architecture.
  • Conducts cost/benefit analysis and provides specific detailed information for hardware and software selection, implementation techniques and tools for the most efficient solution to meet business needs, including present and future capacity requirements.
  • Conducts testing of network design.
  • Responsible for monitoring network hardware operations to ensure properly set configuration options.
  • Plans implementation of enhancements and upgrades to the network.
  • Advises network users of hardware requirements, configurations, and limitations.
  • Maintains technical expertise in all areas of network and computer hardware and software interconnection and interfacing, such as routers, multiplexers, firewalls, hubs, bridges, gateways, etc.
  • Evaluates and reports on new communications technologies to enhance capabilities of the network.
  • May be assigned responsibility for the management of the systems administration function, including associated staff.


Required Skills:

  • Experience operating Cisco UC system components, including:
    • Cisco Unified Communications Manager (UCM)
    • Cisco Unified Border Element (UBE)
    • Cisco ExpressWay or Tandberg Video Communications Server (VCS)
    • Cisco Meeting Server (MS) or Acano Media Gateways
    • Cisco Prime Collaboration Provisioning (PCP)
    • Cisco Unified Computing System (UCS)
    • Cisco Jabber software client
  • Experience operating VMWare ESXi hypervisor servers
  • Understanding of Session Initiation Protocol (SIP) and H.323 communications protocols
  • Understanding of Transport Layer Security (TLS) protocols and certificates
  • Demonstrated ability to work independently, with minimal oversight, and as part of a team of associate contractors
  • Requires 10 to 12 years with BS/BA or 8 to 10 years with MS/MA or 5 to 7 years with PhD.


Other Desired Skills:

  • Experience operating Trident V2CDS Cross-Domain Solution servers
  • Experience with Red Hat Enterprise Linus or CentOS Linux
  • Knowledge of troubleshooting firewalls–specifically regarding SIP and H.323 protocols
  • Knowledge of other vendor UC systems–including, but not limited to, Avaya, Microsoft, Oracle AcmePacket, Polycom


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