Lead VOIP Engineer

Sprinklr

full-time

Posted on: 10/18/2025

Location Type: Office

Location: Gurgaon • 🇮🇳 India

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Senior

LuaPythonVoIP

About the role

Design and build high-performance modules within our Voice platform.
Work on the core telephony stack involving signaling, media processing, NAT traversal, and RTP relaying.
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.
Document design decisions, configurations, and troubleshooting runbooks.

6 to 8 years of experience building and operating VoIP systems or CPaaS platforms.
Solid expertise with SIP signaling, RTP, and media relay techniques.
Strong hands-on with FreeSWITCH, Kamailio/OpenSIPs, RTPEngine.
Hands-on experience with Session Border Controller (SBC), Media Servers and WebRTC.
Experience in managing telephony infrastructure for uptime, latency, and call quality optimization.
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.

Benefits

Comprehensive suite of benefits designed to help each member of our team thrive.
Voluntary healthcare coverage in countries where applicable.
Paid time off to recharge and spend time with loved ones.
Open Mentoring Program designed to create meaningful connections that support growth.

Tip: use these terms in your resume and cover letter to boost ATS matches.

VoIP systemsCPaaS platformsSIP signalingRTPFreeSWITCHKamailioOpenSIPsRTPEngineC/C++Bash

collaborationtroubleshootingdocumentation