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Job Details

Voice Network Systems Engineer


Network Engineer


Ogden, Utah, United States


Global Information Grid (GIG) Service Management-Operations II (GSM-O II), a Defense Group of Leidos has an opening for a Voice Network Systems Engineer. Our customer is the Defense Information Systems Agency (DISA) located at Hill AFB, UT providing Defense Information System Network (DISN) enterprise network services to the department of Defense (DoD), 4th estate and national security organizations.

Primary Responsibilities:

  • Support maintaining a large, complex and highly resilient Cisco based enterprise IP voice and video communications infrastructure.

  • Manage, configure, troubleshoot and assure service supporting all aspects of an enterprise voice, video and data network. Must be organized, document oriented, possess skills in diagramming, and understand WAN principals.

  • Perform system maintenance, support capacity planning activities and complete configuration change actions and documentation efforts.

  • Configure and implement calling search spaces, route plans, route partitions, route lists and device profiles.

  • Troubleshoot and configure Cisco routing and switching devices.

  • Support distributed firewall infrastructure.

  • Develop technical policy, work instructions and reporting in support of an enterprise IP telephony network.

  • Troubleshoot and resolve complex technical problems utilizing foundational knowledge of SIP signaling and call-flows.

  • Troubleshoot remote site registration, signaling and media problems.

  • Validate change requests and ensure accuracy.

  • Manage troubleshoot and configure voice subscribers, call handlers and call routing rules.

  • Manage troubleshoot and configure Cisco and or Juniper routing and switching rules.


  • Expertise in SIP internetworking signaling and call flow.

  • Requires BS degree and 2-4 years of prior relevant experience. Additional experience, education and training may be considered in lieu of degree.

  • Experience with one or multiple Cisco, Avaya or Oracle voice platforms including Cisco Unified Communications Manager (CUCM), Cisco Unity, Cisco Unified Border Element (CUBE), Oracle Session Border Controller (SBC) and Avaya AS5300, Avaya Aura Application Server.

  • Demonstrable experience of advanced troubleshooting to isolate and diagnose network problems for routing, switching, security and large-scale voice implementations.

  • DoD 8570 IAT II (Security+)

  • Currently possess an active Secret security clearance.

Desired skills:

  • Working knowledge of Secure Real-Time Transport Protocol (SRTP) including associated G.711 and G.729 codecs and Digital Tone Multi Frequency (DTMF).

  • Experience with Oracle SBCs and voice media gateway appliances.

  • Experience creating/supporting IPSec MPLS VPN infrastructure

  • Experience implementing and supporting BGP routing protocols

  • Experience designing, configuring and troubleshooting QoS classification, marking and prioritization of network traffic (voice, critical applications, etc.).

  • Familiarity with IPSec implementation and troubleshooting.


Original Posting Date:


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 -

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.