Enterprise Voice Engineer II

By Light Professional IT Services; Shiloh (IL); On-site; USD 80,000 - 110,000; Full time

Job summary

By Light Professional IT Services is looking for an engineer in Shiloh, Illinois, to maintain a scalable IP voice and video communications infrastructure. The ideal candidate will have experience in managing and configuring voice and data networks, knowledge of Cisco and Juniper devices, and must hold a DoD 8750 certification at IAT level II. This position requires an active Secret security clearance and offers a dynamic work environment for support of defense and federal contracts.

Qualifications

• Requires BS degree and 2‑4 years of relevant experience or Masters with less than 2 years.
• Currently possess DoD 8750 certification at IAT level II, Security+ CE or equivalent.
• Demonstrable experience of advanced fault analysis for network problems.

Responsibilities

• Perform engineering tasks to maintain IP voice and video communications infrastructure.
• Manage, configure and troubleshoot voice, video, and data networks.
• Support capacity planning activities and configuration change documentation.

Skills

Cisco Unified Communications Manager (CUCM)

SIP internetworking signaling and call flow

Advanced fault analysis

DoD 8750 certification

Avaya Aura soft switches

IPSec MPLS VPN infrastructure

Education

BS degree

Masters degree

Tools

Cisco or Juniper routing and switching devices

Oracle SBC

Job description

Company Overview

By Light Professional IT Services LLC readies warfighters and federal agencies with technology and systems engineered to connect, protect, and prepare individuals and teams for whatever comes next. Headquartered in McLean, VA, By Light supports defense, civilian, and commercial IT customers worldwide.

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. 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.
• 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.
• Configure route plans, route lists, device profiles, calling search spaces, and route partitions.
• 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.

Required Experience/Qualifications

• Requires BS degree and 2‑4 years of prior relevant experience or Masters with less than 2 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 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.

Preferred Experience/Qualifications

• Working knowledge of Secure Real-Time Transport Protocol (SRTP) including associated G.711 and G.729 codecs and 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.

Special Requirements/Security Clearance

• Currently possess an active Secret security clearance.