Senior VoIP Engineer

2 weeks ago


Gurugram, India Pylon Management Consulting Full time

We are seeking a Senior 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.Responsibilities : - 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, and SIP trunk registration.- Implement and test features like call recording, IVR, voicemail, and DTMF detection.- Monitor live traffic and participate in a 24x7 on-call rotation for critical escalations.- Collaborate with QA on stress/load testing and with Backend teams on provisioning APIs.- Document design decisions, configurations, and troubleshooting runbooks.Requirements : - Strong systems programming and debugging skills in C/C++.- Good scripting/debugging skills (Bash, Python, or Lua for FreeSWITCH modules).- Proficiency with diagnostic tools (Wireshark, tcpdump, etc).- Experience working with geographically distributed infrastructure or HA deployments. (ref:hirist.tech)



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