Senior VoIP / Network Engineer (UCCE Preferred) - 15+ Years required / Onsite to NJ

We are seeking a highly experienced Senior VoIP / Network Engineer with 15+ years of hands-on experience in enterprise voice and network infrastructure. The ideal candidate will have deep expertise in VoIP technologies, advanced networking, and troubleshooting complex, large-scale communication environments. Experience with Cisco contact center technologies (UCCE) is preferred.Key ResponsibilitiesVoIP / Voice EngineeringDesign and architect enterprise VoIP and IP telephony solutionsLead implementation of SIP, RTP, and call control protocolsTroubleshoot complex voice quality issues (latency, jitter, packet loss)Manage dial plans, call routing, and call flow designNetwork EngineeringArchitect and manage enterprise network infrastructure (routers, switches, firewalls)Implement advanced TCP/IP, VLANs, QoS, and VPN solutionsOptimize networks for real-time voice traffic and high availabilityLead network performance tuning and capacity planningUnified Communications / UCCE (Preferred)Support and integrate Cisco UCCE / Contact Center solutionsWork with ICM, CVP, and CUCM environmentsTroubleshoot and optimize call center routing and IVR systems Leadership & TroubleshootingLead complex troubleshooting and root cause analysis (RCA)Mentor junior engineers and provide technical guidanceCollaborate with cross-functional teams on enterprise projectsSecurity & ComplianceEnsure secure voice and network architectureImplement best practices for compliance and data protection