Posted:14 hours ago|
Platform:
On-site
Full Time
ā¢ Design and implement VOIP (signaling and media) infrastructure using FreeSWITCH,
Kamailio/OpenSIPs, and RTPEngine
ā¢ Architect session border controllers (SBC), NAT traversal, load balancing, and failover
strategies
ā¢ Define standards for call rou8ng and audio quality op8miza8on (codecs, jieer, etc.)
ā¢ Lead ini8a8ves for scalability, observability, security, and resiliency of our voice infrastructure
ā¢ Troubleshoot live traffic and provide technical leadership during major incidents
ā¢ Collaborate with Backend and API teams to design provisioning, billing, and call analy8cs APIs
ā¢ Evaluate and onboard open-source tools or commercial carriers as needed
ā¢ Coach and mentor junior/lead engineers in VoIP best prac8ces
ā¢ Strong knowledge of VoIP Protocols (SIP/SDP, RTP/RTCP), Networking fundamentals
(UDP/TCP/IP, DNS, MPLS), QoS (latency, jieer, packet loss mi8ga8on).
ā¢ Hands-on experience with Session Border Controller (SBC), Media Servers and WebRTC.
ā¢ Expert-level understanding of SIP, RTP, NAT traversal (ICE/STUN/TURN), and VoIP security (TLS,
SRTP, fraud preven8on)
ā¢ Hands-on development experience with FreeSWITCH, Kamailio/OpenSIPs, and RTPEngine
ā¢ Experience in designing carrier-grade telephony plaXorms serving millions of calls
ā¢ Strong systems programming and debugging skills in C/C++
ā¢ Strong troubleshoo8ng skills, with experience using network monitoring and debugging
tools.
ā¢ Familiarity with distributed systems and cloud-based deployments (AWS, GCP, Azure)
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