Principal Engineer (VoIP)

Sprinklr

9 years

0 Lacs

Bengaluru Karnataka India

Posted:1 week ago| Platform:

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Skills Required

voip software ai management architecture latency communication leadership engineering devops design kamailio failover routing optimization scalability security api provisioning billing analytics sip networking tcp ip mpls qos controller development programming debugging troubleshooting network monitoring aws gcp tuning

Work Mode

On-site

Job Type

Full Time

Job Description

Sprinklr

What Does Success Look Like?

CCaaS

Seniority Level:

What You’ll Do:

Design and implement VOIP (signaling and media)
infrastructure using
FreeSWITCH, Kamailio/OpenSIPs,
and
RTPEngine.
Architect session border controllers (SBC), NAT traversal, load balancing, and failover strategies.
Define standards for call routing and audio quality optimization (codecs, jitter, etc.)
Lead initiatives for
scalability, observability, security, and resiliency
of our voice infrastructure.
Troubleshoot live traﬃc and provide technical leadership during major incidents.
Collaborate with Backend and API teams to design provisioning, billing, and call analytics APIs.
Evaluate and onboard open-source tools or commercial carriers as needed.
Coach and mentor junior/lead engineers in VoIP best practices.

What Makes You Qualified?

9 to 12 years of hands-on experience in the
Telephony / VoIP / CPaaS
domain.
Strong knowledge of
VoIP Protocols
(SIP/SDP, RTP/RTCP),
Networking fundamentals
(UDP/TCP/IP, DNS, MPLS),
QoS
(latency, jitter, packet loss mitigation).
Hands-on experience with
Session Border Controller (SBC), Media Servers and WebRTC
.
Expert-level understanding of
SIP, RTP, NAT traversal (ICE/STUN/TURN)
, and VoIP security (TLS, SRTP, fraud prevention).
Hands-on development experience with
FreeSWITCH, Kamailio/OpenSIPs, and RTPEngine.
Experience in designing
carrier-grade telephony plaforms
serving millions of calls.
Strong systems programming and debugging skills in
C/C++
Strong troubleshooting skills, with experience using
network monitoring and debugging tools.
Familiarity with distributed systems and cloud-based deployments (AWS, GCP, Azure)
Excellent problem-solving, debugging, and performance tuning skills

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