Senior Voice Engineer

Labcorp•Durham, NC

4d•Hybrid

About The Position

Labcorp is seeking a Senior Voice Engineer to join our team in the Burlington, NC or Durham, NC office. This role requires deep expertise in Cisco Unified Communications Manager (CUCM), Cisco voice routers and gateways (ISR/ASR, VG series), SIP trunking, enterprise voice/video integrations, and Webex Calling. The ideal candidate will also bring experience with number porting and carrier coordination to ensure seamless migrations and onboarding. You will ensure the reliability, scalability, and performance of our global voice infrastructure while driving adoption of best practices and emerging technologies.

Requirements

Bachelor’s Degree or Associate's Degree and 5 or more years of experience.
5 or more years of enterprise voice engineering experience with Cisco UC solutions.
3 or more years of experience with: CUCM (multi-cluster environments, dial plans, SRST, device pools).
3 or more years of experience with: Cisco ISR/ASR routers, VG gateways, and CUBE (SIP, H.323, MGCP).
3 or more years of experience with: Unity Connection (voicemail, integration with CUCM and Exchange).
3 or more years of experience with: Webex Calling and Webex App (cloud calling, hybrid deployments, user provisioning).
3 or more years of experience with: Number porting and carrier coordination (domestic and international).
Troubleshooting and problem-solving skills with the ability to resolve complex issues quickly.
Excellent verbal and written communication skills with strong client-facing experience.
Ability to lead projects, manage priorities, and deliver results in a team environment.

Nice To Haves

CCNP Collaboration certification.
CCIE Collaboration certification.
Experience with VoIP, SIP, RTP, QoS, and enterprise network protocols.
Experience with global dial plans, number normalization, and least cost routing.
Experience with integration of PSTN, carrier services, and cloud collaboration.
Experience with voice security standards (TLS, SRTP, SBCs).
Experience with enterprise WAN environments (MPLS, SD-WAN).

Responsibilities

Design, implement, and maintain Cisco Unified Communications Manager (CUCM) clusters, dial plans, and call routing.
Configure and support Cisco ISR/ASR voice routers, VG series gateways, and CUBE for SIP, PRI, and analog integrations.
Manage and optimize SIP trunking, PSTN connectivity, and voice routing policies across enterprise environments.
Deploy, configure, and support Cisco Unity Connection for voicemail and messaging solutions.
Deploy and support Cisco Webex Calling and Webex App, including hybrid and cloud integrations.
Lead number porting projects, including coordination with carriers, validation of routing, and troubleshooting of porting issues.
Perform upgrades, migrations, and patching for CUCM, Unity, and Webex platforms.
Troubleshoot complex issues across CUCM, gateways, SIP trunks, and collaboration tools.
Collaborate with network, security, and collaboration teams to ensure seamless integration of voice services.
Document system architecture, configurations, and operational procedures.
Mentor junior engineers and provide technical leadership on voice projects.
Participate in vendor discussions, proof-of-concepts, and readiness assessments for new voice solutions.