Voice Network Systems Engineer

Voice Network Systems Engineer:

Our team is looking for a Voice Network Systems Engineer to help support the Defense Information Systems Agency (DISA) on a long-term program. The position is located at Scott AFB outside of St. Louis.

The Good:

• Long-term career growth
• Competitive pay and benefits

The Must Haves:

• Experience with Cisco Unified Communications Manager (CUCM)
• Secret Clearance or higher
• DoD 8570 IAT II Certification (Sec+, CCNA, etc.)

Primary Responsibilities:

• Manage, configure, troubleshoot and assure service supporting all aspects of an enterprise voice, video and data network. Must be organized, document oriented, possess skills in diagramming, and understand WAN principals.
• Support maintaining a large, complex and highly resilient Cisco based enterprise IP voice and video communications infrastructure.
• 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.
• Troubleshoot remote site registration, signaling and media problems.
• Validate change requests and ensure accuracy.
• Manage troubleshoot and configure voice subscribers, call handlers and call routing rules.
• Manage troubleshoot and configure Cisco and or Juniper routing and switching rules.
• Troubleshoot and configure Cisco routing and switching devices.
• Support distributed firewall infrastructure.
• Develop technical policy, work instructions and reporting in support of an enterprise IP telephony network.
• Troubleshoot and resolve complex technical problems utilizing foundational knowledge of SIP signaling and call-flows.

Requirements:

• Requires BS degree and 2-4 years of prior relevant experience. Additional experience, education and training may be considered in lieu of degree.
• DoD 8570 IAT II (Security+)
• Currently possess an active Secret security clearance.
• Demonstrable experience of advanced troubleshooting to isolate and diagnose network problems for routing, switching, security and large-scale voice implementations.
• Expertise in SIP internetworking signaling and call flow.
• Experience with Cisco Unified Communications Manager (CUCM)

Desired 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 Oracle SBCs and voice media gateway appliances.
• 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.