Enterprise Voice Engineer III

As an Enterprise Voice Engineer III, you will help sustain and enhance a large-scale IP voice and video communications environment to support secure, reliable, and uninterrupted DISA Voice Services. This role focuses on sustainment, maintenance, and problem and change management across enterprise voice services. You will troubleshoot complex signaling and media issues, validate and execute configuration changes, and contribute to technical documentation that supports consistent operations. This opportunity is well-suited for an engineer who thrives in highly resilient environments and enjoys solving challenging voice and network problems.

Requirements

• BS and 4 to 8 years of prior relevant experience, or a Masters with 2 to 6 years of prior relevant experience (or equivalent combination of education and/or experience).
• Currently possess DoD 8750 certification at IAT level II, Security+ CE or equivalent.
• Active Secret clearance, which requires U.S. citizenship.

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.
• Configure and implement calling search spaces, route plans, route partitions, route lists, and device profiles.
• Configure Cisco or Juniper routing and switching devices.
• Support distributed firewall infrastructure.
• 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.

Qualifications

• 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.

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 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 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.

Pay

Pay range: $75,000-$105,000 (annual). This pay range is based on qualifications and experience, and assumes all role requirements are met.

Schedule

On-Site at Scott AFB, St. Louis.