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RMantra Solutions · 3 weeks ago

Enterprise Voice Engineer III

Reston, VA

Full-time

Onsite

Mid, Senior Level

4+ years exp

RMantra Solutions is seeking an Enterprise Voice Engineer III to perform sustainment, maintenance, and management services for DISA Voice Services. The role involves maintaining a resilient IP voice and video communications infrastructure and requires a strong understanding of network management and technical problem-solving.

DatabaseInformation TechnologyWarehousing

No H1B

Security Clearance Required

U.S. Citizen Only

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 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

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

Qualification

Cisco Unified Communications ManagerSIP signalingSecurity+ CECisco routingSwitchingAvaya voice platformsOracle SBCTechnical policy developmentFault analysisTeam trainingDocumentation skills

Required

Currently possess DoD 8750 certification at IAT level II, Security+ CE or equivalent to meet requirement

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

Currently possess an active Secret security clearance

Requires BS and 4-8 years of prior relevant experience or Masters with 2-6 years of prior relevant experience. (Or equivalent combination of education and/or experience.)

Preferred

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