Enterprise Voice Engineer IV

Leidos•Shiloh, IL

About The Position

Our customer, the Defense Information Systems Agency (DISA), provides, operates, and assures command and control of the Defense Information System Network (DISN) services to its customers, the department of Defense (DoD) and national security organizations. This position directly supports the DISA-provided capabilities and services. The Leidos Digital Modernization Sector/Global Solutions Management-Operations II (GSMO-II) contract has an opening for an Enterprise Voice Engineer at Scott AFB, IL. The Enterprise Voice Engineer will perform sustainment, maintenance, Problem and Change management services to help ensure secure, reliable, and uninterrupted availability of DISA Voice Services. This position requires U.S. citizenship with an active TS/SCI clearance to start. Responsible for performing, training team and developing processes for the following duties: • Perform engineering tasks to maintain a large, complex and highly resilient IP voice and video communications infrastructure. • Manage, configure, troubleshoot and assure service supporting all aspects of a 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. • Design, configure and implement calling search spaces, route plans, route partitions, route lists and device profiles. • Analyze and configure Cisco or Juniper routing and switching devices. • Maintain distributed firewall infrastructure. • Oversee and develop technical policy, work instructions and reporting in support of an enterprise IP telephony network. • Analyze and resolve complex technical problems utilizing foundational knowledge of SIP signaling and call-flows. • Analyze and resolve remote site registration, signaling and media problems. • Validate change requests and ensure accuracy. • Perform fault analysis and configuration of voice subscribers, call handlers and call routing rules. • Perform fault analysis and configuration of Cisco and or Juniper routing and switching rules.

Requirements

Currently possess DoD 8750 certification at IAT level II, Security+ CE or equivalent to meet requirement.
In-depth 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 Aura Application Server.
In-depth expertise in SIP internetworking signaling and call flow.
Demonstrable experience of advanced fault analysis to isolate and diagnose network problems for routing, switching, security and large scale voice implementations.
Currently possess an active TS/SCI security clearance.
Requires BS degree and 8-12 years of prior relevant experience or Masters with 6-10 years of prior relevant experience. May possess a Doctorate in technical domain. (Or equivalent combination of education and/or experience.)

Nice To Haves

In-depth knowledge of Secure Real-Time Transport Protocol (SRTP) including associated G.711 and G.729 codecs and Digital Tone Multi Frequency (DTMF).
In-depth experience with Cisco Unified Communications Manager and or Avaya Aura soft switches.
In-depth experience with Oracle SBCs and other voice media gateway appliances.
In-depth experience supporting distributed firewall infrastructure.
In-depth experience creating/supporting IPSec MPLS VPN infrastructure
In-depth experience implementing and supporting BGP routing protocols
In-depth experience designing, configuring and troubleshooting QoS classification, marking and prioritization of network traffic (voice, critical applications, etc.).
Experience with IPSec implementation and troubleshooting.

Responsibilities

Perform engineering tasks to maintain a large, complex and highly resilient IP voice and video communications infrastructure.
Manage, configure, troubleshoot and assure service supporting all aspects of a voice, video and data network.
Perform system maintenance, support capacity planning activities and complete configuration change actions and documentation efforts.
Design, configure and implement calling search spaces, route plans, route partitions, route lists and device profiles.
Analyze and configure Cisco or Juniper routing and switching devices.
Maintain distributed firewall infrastructure.
Oversee and develop technical policy, work instructions and reporting in support of an enterprise IP telephony network.
Analyze and resolve complex technical problems utilizing foundational knowledge of SIP signaling and call-flows.
Analyze and resolve remote site registration, signaling and media problems.
Validate change requests and ensure accuracy.
Perform fault analysis and configuration of voice subscribers, call handlers and call routing rules.
Perform fault analysis and configuration of Cisco and or Juniper routing and switching rules.