Senior Voice Engineer

Labcorp

Senior Voice Engineer at Labcorp responsible for Cisco UC design, implementation, and maintenance. Collaborating with teams to ensure seamless integration of voice services in enterprise environments.

Posted 6/17/2026full-timeDurham • North Carolina • 🇺🇸 United StatesSeniorWebsite

Tech Stack

Tools & technologies

CloudUnityVoIP

About the role

Key responsibilities & impact

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

Requirements

What you’ll need

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)
Cisco ISR/ASR routers, VG gateways, and CUBE (SIP, H.323, MGCP)
Unity Connection (voicemail, integration with CUCM and Exchange)
Webex Calling and Webex App (cloud calling, hybrid deployments, user provisioning)
Number porting and carrier coordination (domestic and international)
CCNP Collaboration certification (preferred)
CCIE Collaboration certification (preferred)
Experience with VoIP, SIP, RTP, QoS, and enterprise network protocols (preferred)
Experience with global dial plans, number normalization, and least cost routing (preferred)
Experience with integration of PSTN, carrier services, and cloud collaboration (preferred)
Experience with voice security standards (TLS, SRTP, SBCs) (preferred)
Experience with enterprise WAN environments (MPLS, SD-WAN) (preferred)

Benefits

Comp & perks

Medical
Dental
Vision
Life
STD/LTD
401(k)
Paid Time Off (PTO)
Flexible Time Off (FTO)
Tuition Reimbursement
Employee Stock Purchase Plan

ATS Keywords

✓ Tailor your resume

Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard Skills & Tools

Cisco Unified Communications ManagerSIP trunkingPSTN connectivityCisco Unity ConnectionWebex CallingWebex AppVoIPSIPRTPQoS

Soft Skills

technical leadershipmentoringcollaborationtroubleshootingdocumentation

Certifications

CCNP CollaborationCCIE Collaboration