Principal VoIP Engineer

Job Summary

A company is looking for a Senior Lead - VOIP Engineer.

Key Responsibilities

• Design and implement VOIP infrastructure using FreeSWITCH, Kamailio/OpenSIPs, and RTPEngine
• Architect session border controllers, NAT traversal, load balancing, and failover strategies
• Lead initiatives for scalability, observability, security, and resiliency of the voice infrastructure

Required Qualifications

• 12+ years of hands-on experience in the Telephony / VoIP / CPaaS domain
• Strong knowledge of VoIP protocols (SIP/SDP, RTP/RTCP) and networking fundamentals (UDP/TCP/IP, DNS, MPLS)
• Hands-on experience with Session Border Controller (SBC), media servers, and WebRTC
• Expert-level understanding of SIP, RTP, NAT traversal, and VoIP security
• Strong systems programming and debugging skills in C/C++