Voice Network Engineer

Hi,Hope you are doing well.Please go through the below Job Description and I would humbly request you to apply with your latest resume. Our goal is not to just submit your profile but to secure an interview for you. If this email/Job Description has reached out to you in error, please accept my sincere apologies and disregard the email. Notify us via email, and we'd immediately remove you from consideration.Position: Network voice EngineerLocation: New York (Onsite)Employment type: Long Term ContractNeed 15+ years of experienceJD: - Role PurposeDesign, implement, and operate enterprise voice services across Microsoft Teams and Cisco Call Manager, delivering multi-carrier resilience, enabling migration from legacy platforms, and ensuring high availability and compliant telephony services across global environments.Key ResponsibilitiesThe role is responsible for designing and implementing Microsoft Teams Phone and Voice solutions, including Direct Routing and Operator Connect, across multiple telecom carriers, while integrating and managing multi-carrier SIP environments with resilient routing and failover. It includes supporting and maintaining Cisco Call Manager (CUCM) alongside hybrid coexistence with Teams and configuring and managing Session Border Controllers (SBCs) such as Cisco CUBE, AudioCodes, or SBCaaS. The engineer will develop and maintain dial plans, numbering strategies, and call routing logic, as well as configure LAN switching, VLANs, and QoS to support voice traffic. The position involves leading or supporting voice migration programmes from PBX/CUCM to Teams, troubleshooting issues across voice, network, SBC, and carrier layers, and managing incidents, requests, and problem records through ServiceNow within resolver groups. The role also requires coordination with telecom providers for circuit delivery, SIP trunking, and number provisioning, as well as managing supplier performance, SLAs, and escalations. In addition, the engineer will support call recording platforms such as Verint, ensure compliance with regulatory requirements, and contribute to design standards, documentation, and governance processes.Required Skills & ExperienceStrong experience in VoIP technologies (SIP, H.323, call flows, dial plans)Hands-on experience with Microsoft Teams Phone Service (provisioning, troubleshooting)Experience supporting Cisco Call Manager (CUCM)Deep understanding of SBC configuration, SIP trunking, and troubleshootingSolid understanding of IP networking (addressing, routing, VLANs, QoS)Experience configuring Cisco LAN switches for IPT/voice servicesKnowledge of legacy telephony (PSTN, POTS, ISDN30)Experience designing multi-carrier / highly available voice architecturesExperience with number management, telco ordering, and carrier onboardingExperience with contact centre integration (e.g. NICE, Genesys)Exposure to cloud voice and hybrid architectures (Azure, SBCaaS)Experience working with multiple telecom carriers and service providersStrong troubleshooting capability across voice and network domainsExperience operating in an ITIL-based support model (ServiceNow)Desirable SkillsExperience with automation or scripting (e.g. PowerShell for Teams)Experience supporting global or multi-region voice environmentsCertifications (Preferred)Microsoft Teams Voice Engineer Expert (MS-700 or successor)Cisco CCNP CollaborationITIL Foundation (or equivalent)