Senior Network Voice Engineer - TS​/SCI Clearance

Description

The Senior Network / Voice Engineer will support enterprise network and voice communications infrastructure within a secure federal environment. This role requires an active TS/SCI clearance and is ideal for a candidate with a strong foundation in core network engineering who also has hands-on experience supporting voice systems, VoIP platforms, unified communications services, and voice equipment moves, adds, and changes. The position will focus on reliable day-to-day operations, technical troubleshooting, equipment configuration, user support, documentation, and coordination with network, telecom, cybersecurity, and mission stakeholders.

• Perform moves, adds, changes, and deletions for voice equipment, user extensions, voicemail accounts, phones, call routing, hunt groups, shared lines, and related telephony services.
• Install, configure, maintain, and troubleshoot IP phones, analog voice devices, voice gateways, call managers, session border controllers, voicemail systems, and unified communications components.
• Support day-to-day voice operations, including provisioning, incident response, ticket resolution, user support, endpoint replacement, and coordination of voice service requests.
• Troubleshoot voice quality and connectivity issues, including one-way audio, dropped calls, registration failures, latency, jitter, packet loss, codec mismatch, dial-plan issues, and PSTN/SIP trunk problems.
• Support core network engineering tasks, including LAN/WAN connectivity, VLANs, routing, switching, firewall coordination, QoS, network segmentation, and secure network access.
• Implement and maintain QoS policies to prioritize voice traffic across LAN, WAN, and wireless environments.
• Coordinate with carriers, vendors, government customers, and internal technical teams to support circuit issues, number assignments, porting activity, trunk configuration, and service restoration.
• Create and maintain accurate documentation for voice infrastructure, phone inventories, extension assignments, dial plans, call flows, topology diagrams, standard operating procedures, and change records.
• Plan and execute approved network and voice changes through established change management processes while minimizing risk to mission operations.
• Support cybersecurity and compliance requirements by maintaining secure configurations, assisting with vulnerability remediation, supporting audit requests, and following federal security standards and operational procedures.
• Provide technical guidance to junior technicians or support staff for voice endpoint configuration, troubleshooting steps, and escalation procedures.

• Active TS/SCI clearance required.
• U.S. citizenship required due to federal security requirements.
• Hands‑on experience supporting enterprise network and voice infrastructure in federal, defense, intelligence, or similarly secure environments.
• Experience performing voice moves, adds, changes, and deletions for IP phones, extensions, voicemail, call routing, hunt groups, shared lines, and related telephony services.
• Working knowledge of VoIP technologies, SIP, RTP, QoS, dial plans, gateways, trunks, voicemail systems, and unified communications platforms.
• Strong understanding of core networking concepts, including TCP/IP, subnetting, VLANs, routing, switching, LAN/WAN connectivity, network segmentation, and troubleshooting.
• Experience supporting Cisco or comparable network and voice technologies, such as Cisco Unified Communications Manager, Unity Connection, voice gateways, IP phones, CUBE/SBCs, routers, and switches.
• Ability to troubleshoot voice and network issues using logs, packet captures, monitoring tools, call traces, command-line diagnostics, and vendor support resources.
• Familiarity with secure configuration management, change control, incident management, vulnerability remediation, and documentation requirements in a federal environment.
• Strong customer service and communication skills with the ability to support end users, brief technical issues, and coordinate effectively with engineering teams and government stakeholders.

• Bachelor's degree in…