Enterprise Voice Engineer

C3EL; Illinois; On-site; USD 110,000 - 150,000; Full time

Job summary

C3EL seeks a cleared Enterprise Voice Engineer to join the team on-site at Scott Air Force Base in Illinois. You will sustain, maintain, and enhance critical DISA voice services to support secure, mission-ready communications for the DoD and national security organizations.

Responsibilities include configuring and troubleshooting voice, video, and data networks, managing call routing, and supporting firewall infrastructure while ensuring accurate documentation and change management.

Qualifications

• Active DoD secret clearance required.
• Experience with Cisco/Avaya/Oracle voice platforms including CUCM, Unity, CUBE, SBC, Avaya Aura.
• SIP signaling and call flow expertise.
• Strong fault analysis for large voice implementations.

Responsibilities

• Maintain and enhance a large IP voice and video communications infrastructure.
• Configure, troubleshoot and assure service across voice, video, and data networks.
• Configure calling search spaces, route plans, route partitions, and device profiles.
• Analyze Cisco/Juniper routing and switching devices.
• Support distributed firewall infrastructure.
• Assist in policy and work instruction development for enterprise IP telephony.

Skills

SIP signaling & call flows

Fault analysis & troubleshooting

VoIP/network concepts

Documentation & diagramming

Network security basics

Education

Bachelor's degree in a related field

Tools

CUCM

Cisco Unity

CUBE

Oracle SBC

Avaya Aura

SBC appliances

Job description

(Due to the nature of the work and contract requirements, U.S. Citizenship isrequired.)

Description:

C3EL is seeking a cleared and experienced Enterprise Voice Engineer to join our team on-site at Scott Air Force Base in Illinois. In this role, you’ll provide technical expertise to sustain, maintain, and enhance critical Defense Information Systems Agency (DISA) voice services—supporting secure, reliable, and mission-ready communications for the Department of Defense and national security organizations.

Responsibilities will include, but not be limited to:

• 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.
• 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.
• Support distributed firewall infrastructure.
• Provide input in the development of 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.

Minimum Qualifications:

• An active, in-scope US Government issued Secretclearance.
• Current DoD-8570 IAT Level 2 baseline certification (Security+ CE, or equivalent).
• 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.
• 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.

Desired Qualifications:

• 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 Cisco Unified Communications Manager and or Avaya Aura soft switches.
• Experience with Oracle SBCs and other voice media gateway appliances.
• Experience supporting distributed firewall 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.

Education:

• Requires a Bachelor's degree and 4-8 years of prior relevant experience or a Master's degree with 2-6 years of prior relevant experience. (Or equivalent combination of education and/or experience.)

As set forth in C3EL's Equal Employment Opportunity policy,we do not discriminate on the basis of any protected group status under any applicable law.