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Piper Companies is seeking a VoIP Engineer – SBC to join a federal program onsite at Scott Air Force Base, Illinois. This position involves advanced Session Border Controller (SBC) engineering, carrier-grade VoIP integration, and policy management using PSX for secure and reliable telephony services. The ideal candidate will bring extensive SBC experience from a carrier or large-scale enterprise environment and hold an active Secret Clearance.
Job Responsibility:
Act as an onsite engineering resource, delivering expert support for SBC and VoIP systems
Configure, implement, and maintain SBC platforms and PSX policy servers to enable SIP trunking, routing, and security
Perform carrier-level SBC integration tasks, including SIP normalization, header manipulation, and policy enforcement
Troubleshoot complex SIP-layer issues using packet captures, call flow analysis, and diagnostic tools
Assist with TDM-to-SIP migration projects, conduct lab testing for new SBC software/firmware, and validate interoperability
Collaborate with voice and network teams to ensure system reliability and compliance with federal standards
Requirements:
5+ years of experience in VoIP engineering and SBC deployment, preferably in carrier or enterprise environments
Strong understanding of SIP protocol, including interpreting SIP messaging and resolving call flow issues
Hands-on experience with SBC platforms and PSX policy server configuration
Familiarity with SIP trunking, routing policies, and carrier-grade interconnect requirements
Proficiency with packet capture tools (e.g., Wireshark) for SIP-layer troubleshooting
Must be U.S. work eligible and maintain an Active Secret Clearance
Knowledge of Cisco CUBE SBC, CUCM provisioning, and PSX systems