Enterprise Voice Engineer II

Overview

The Enterprise Voice Engineer II supports the sustainment, maintenance, and problem and change management activities that help ensure secure, reliable, and uninterrupted availability of DISA Voice Services. In this role, you will maintain and troubleshoot a large, complex IP voice and video communications infrastructure, partnering with the team to keep services resilient and highly available. You will work hands-on with routing, switching, call routing, and SIP signaling to diagnose and resolve complex issues across distributed environments. This opportunity is well-suited for an organized, documentation-focused engineer who enjoys solving challenging voice and network problems.

Requirements

• BS degree and 2 to 4 years of prior relevant experience, or a Masters with less than 2 years of prior relevant experience.
• Current DoD 8750 certification at IAT Level II, Security+ CE, or equivalent.
• Active Secret clearance.
• On-site at Scott Air Force Base, St. Louis.

Responsibilities

Responsible for performing and training the team on 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 principles.
• 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.

Why Apply

If you enjoy working at the intersection of enterprise voice, routing and switching, and secure network services, this role offers the chance to take on complex, high-impact troubleshooting and sustainment work. You will contribute to keeping critical voice services reliable and resilient while collaborating with a team that values strong engineering discipline and documentation.