Own L3 escalation and root cause analysis for complex voice and contact center incidents.
Engineer and support SIP trunks, SBCs/voice gateways (e.g., CUBE, Ribbon, AudioCodes), dial plans, and carrier integrations.
Lead or materially contribute to migration efforts from legacy PBX/Avaya to modern VoIP/cloud platforms.
Design and maintain high availability and disaster recovery strategies for voice systems.
Support contact center telephony routing, time-of-day/holiday changes, and call delivery troubleshooting.
Partner with LAN/WAN teams to ensure QoS, segmentation, and real-time traffic optimization.
Implement secure voice architecture including SIP security, certificate management, and toll fraud prevention.
Interface with vendors and carriers for escalations and service changes while reducing third-party dependency.
Participate in on-call rotation and after-hours maintenance as required.

Requirements

6–10+ years of progressive enterprise voice/telephony engineering experience.
Experience supporting legacy PBX/Avaya environments.
Strong hands-on SIP troubleshooting and call flow analysis (signaling and media).
Experience with SBCs and carrier SIP trunk integrations.
Strong understanding of networking fundamentals impacting VoIP (QoS, routing, switching, firewall/NAT).
CCNA required; CCNP Collaboration or Enterprise preferred (or equivalent experience).
Automation/scripting exposure (PowerShell, APIs) is a plus.

Benefits

medical
dental
vision
401k
PTO/paid sick leave
employee stock purchase plan

Applicant Tracking System Keywords

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

Hard Skills & Tools

SIP troubleshootingcall flow analysisSBCscarrier SIP trunk integrationsdisaster recovery strategieshigh availability designtelephony routingnetworking fundamentalsautomationscripting

Soft Skills

root cause analysisleadershipcollaborationcommunicationproblem-solvingvendor managementteam partnershipescalation managementservice change managementon-call support

Certifications

CCNACCNP CollaborationCCNP Enterprise