VoIP, SIP, RTP, RTCP, PBX, CCaaS, Contact Center Engineering, Avaya, Cisco, Zoom, Webex, Microsoft Teams, Five9, SBC, IVR, VDN, Vectoring, Call Routing, Dial Plans, API Integration, JSON, Webhooks, Python, Windows, Linux, VMware, ESXi, Cloud Migration, AI Voice Technology, Vendor Management, Troubleshooting. This person should be comfortable troubleshooting complex voice issues, supporting cloud migration initiatives, collaborating across IT teams, and helping modernize contact center technology through automation, scripting, and AI-enabled solutions.