Lead Software 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 signaling, 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.

What You’ll Do:

- Implement core voice capabilities using FreeSWITCH, Kamailio/OpenSIPs, 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 provisio...