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Scott Air Force Base, IL, United States
Posted · 02.09.2026
SmartRecruiters (US)

# Voice Network Engineer

Abacus Technology Corporation

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 Asterisk networks, Call Manager Express, SRST, and other Cisco VoIP networks. 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. All your information will be kept confidential according to EEO guidelines. Abacus Technology Corporation is a Federal government contractor and provider of enterprise information technology (IT) services and solutions. For nearly 40 years, we’ve developed effective partnerships with government and industry to tackle business challenges and pressures for Federal Defense, Civilian, and Intelligence customers. Abacus maintains core competencies in: IT Infrastructure Support, Network Operations and Maintenance, Communication Solutions, Systems Engineering and Integration, Cyber Security / Information Assurance, Application Development, Program Management, and Business Transformation.

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