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# Senior VoIP / SIP Engineer - E911 / SBC

- **Company:** BlackStar Enterprise Group, Inc.
- **Location:** Winchester, VA, United States
- **Experience:** Expert
- **Salary:** $150,000.0 - $180,000.0
- **Contract:** Permanent contract
- **Skills:** Automatic Call Distributor, VoIP, Issue Tracking Systems, Interoperability, Network Troubleshooting, Packet Analyzer, Systems Integration, Wireshark, Ribbon (Software), SC Clearance, Multiaccess Edge Computing, Cisco
- **Published:** June 4, 2026
- **Apply:** https://www.indeed.com/viewjob?jk=f5a3a070dd45b783

## About the Role

Do you have experience in Voice over internet protocol (VoIP) configuration?, * Active Secret Clearance (mandatory)

 * 10+ years of telecommunications engineering experience
 * 5+ years of VoIP/SIP engineering experience
 * Strong experience with SIP signaling, call flows, and interconnection engineering
 * Hands-on experience with Ribbon Communications, Sonus, or Genband platforms
 * Experience with Session Border Controllers (SBCs) in enterprise or carrier environments
 * E-911 / PSAP or NG911 call routing integration experience
 * Proficiency using Wireshark or equivalent packet capture tools
 * Bachelor's degree in Telecommunications, Engineering, IT, or equivalent experience

Preferred Experience

 * Prior work with DISA VISP, Army VMOD, or U.S. DoD voice modernization programs
 * Experience supporting PSAP interconnectivity or emergency communications systems
 * Familiarity with NG911 architecture and public safety call routing
 * Cisco certifications (CCNP or CCIE preferred)
 * Experience in federal contractor or multi-agency regulated environments

Work Environment

 * On-site role in Winchester, VA
 * Federal/DoD contractor environment with structured change control and cross-agency coordination
 * Mission-critical communications supporting defense and emergency response systems, Telecommunications Engineer, VoIP Engineer, SIP Engineer, SBC Engineer, Ribbon Engineer, E-911 Engineer, NG911 Specialist, PSAP Integration Engineer, Federal Telecom Engineer, DISA VISP, Army VMOD, VoIP Architect, Voice Network Engineer, Wireshark Analyst, Defense Contractor Telecommunications Specialist.

## Description

We are seeking a Senior Telecommunications Engineering Specialist to support mission-critical federal voice communications for Army Voice Modernization (VMOD) initiatives. This role focuses on Ribbon Federal Edge deployment, SIP interconnection engineering, and E-911/NG911 call routing across DISA VISP, Army PSAP environments, and related federal voice infrastructure.

The ideal candidate brings deep expertise in VoIP/SIP engineering, Session Border Controllers (SBCs), and emergency call routing within U.S. federal or DoD telecom environments., * Support deployment and integration of Ribbon Federal Edge gateways and SBC environments

 * Design, troubleshoot, and maintain SIP interconnection and policy routing across federal voice networks
 * Analyze and resolve E-911 / NG911 call flow and routing issues across PSAP environments
 * Perform end-to-end voice network troubleshooting using packet capture and SIP analysis tools (e.g., Wireshark)
 * Support deployment validation, readiness assessments, and interoperability testing
 * Coordinate technical integration between Federal Edge systems, DISA VISP, and Army PSAP infrastructure
 * Identify technical risks and provide mitigation strategies for voice network deployments
 * Support engineering issue tracking, documentation, and cross-agency technical coordination


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