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 provisioning APIs

• Docu...