Voice Network Engineer

Abacus Technology Corporation; Belleville (IL); On-site; USD 100,000 - 140,000; Full time

Job summary

Abacus Technology Corporation is seeking a Voice Network Engineer to provide infrastructure support for enterprise communications networks at Scott AFB. This full-time role requires delivering tier 3 engineering and hands-on Cisco VoIP expertise, including CUCM and Unity, SBCs, and SIP integrations.

Qualified candidates will have 5+ years in VoIP, a related Bachelor's degree, CCNP Collaboration, and a TS clearance. U.S. citizenship and eligibility for a security investigation are required.

Qualifications

• 5+ years of VoIP/telecommunications engineering experience.
• Bachelor’s degree in a related field.
• CCNP Collaboration certification.
• Hands-on with switches/routers and physical network infrastructure.
• Experience with CUCM and Cisco Unity.
• Network implementation and maintenance experience.
• Ability to adapt to varying workloads and work with all levels.
• US citizen with Top Secret clearance.
• Security investigation program eligibility.

Responsibilities

• Provide tier 3 engineering and support for voice and communications networks.
• Configure, patch, and enhance Cisco VoIP systems including CUCM and Unity.
• Develop SIP configurations for SBCs and other devices to connect external voice systems.
• Develop SIP connections between VoIP network and customer networks (Asterisk, Call Manager Express, SRST).

Skills

VoIP engineering

Team collaboration

Adaptability

Education

Bachelor's degree in a related field

CCNP Collaboration certification

Tools

CUCM

Cisco Unity

Session Border Controllers

Ribbon VX900

Call Manager Express

Asterisk

Job description

Abacus Technology is seeking a Voice Network Engineer to provide infrastructure support of communications networks for an enterprise program at Scott AFB. This is a full-time position.

Responsibilities

• Provide tier 3 engineering and support for voice and communications networks.
• Configure, develop, patch, STIG, enhance, and add features to Cisco VoIP system to include Call Manager, Cisco Unity, Ribbon VX900 devices, Instant Message and Presence and Teleconference Bridges.
• Develop configurations and methods for Cisco Unified Border Elements, Session Border Controllers, and other network devices that use Session Initiated Protocol (SIP) to connect system to external voice systems.
• Develop configurations for SIP connections between the VoIP network and other customer networks including Asterik networks, Call Manager Express, SRST, and other Cisco VoIP networks.

Qualifications

5+ years experience in a VoIP or telecommunications engineering role. Bachelor’s degree in a related field. Must be CCNP Collaborations certified. Hands‑on experience with physical network infrastructure (switches, routers). Extensive experience with Cisco tools and technologies including Cisco Unified Call Manager (CUCM) and Unity. Experience with network implementation and maintenance. Able to demonstrate flexibility in adjusting to variable workload and job duties. Able to interact professionally with all levels of an organization. Must be a US citizen and hold a current Top Secret clearance.

Applicants selected will be subject to a U.S. government security investigation and must meet eligibility requirements for access to classified information.