VOIP Lead Engineer

We are seeking a Lead VoIP Engineer to design and build high-performance modules within our Voice platform. You’ll work on the core telephony stack involving signalling, media processing, NAT traversal, and RTP relaying. This is a hands-on execution role ideal for engineers who love building, debugging, and optimizing real-time communication systems.

Responsibilities:

• Implement core voice capabilities using FreeSWITCH, Kamailio, and RTPEngine.
• Build and optimize SIP call routing logic, RTP media relays, failover mechanisms, and NAT traversal.
• Develop and manage configurations for scalability, codec negotiation, SIP trunk registration.
• Implement and test features like call recording, IVR, voicemail, DTMF detection.
• Monitor live traffic and participate in 24x7 on-call rotation for critical escalations.
• Collaborate with QA on stress/load testing and with Backend teams on pro...