Job
Description
Weâre hiring a VoIP/SIP Engineer with deep expertise in large-scale real-time communication, SIP (LiveKit, OpenSIPS, Asterisk, Kamailio, etc.), and seamless human-AI call flows. What Youâll Do Architect, build, and scale high-concurrency VoIP platforms (think 10,000+ concurrent calls, multi-tenant). Deep-dive into SIP stack (LiveKit, OpenSIPS, etc.), optimize call routing, failover, and reliability. Integrate state-of-the-art AI voice agents into live voice traffic (real-time TTS/STT, call hand-off, etc.). Solve for ultra-low latency and seamless transfer between human and AI agents. Design for global scaling, redundancy, and compliance. Be the go-to expert for SIP security, NAT traversal, media streaming, protocol optimization, and troubleshooting at scale. You Must Have Proven experience architecting & running large-scale SIP/VoIP infrastructure (real-world scale, not âlab onlyâ). Hands-on expertise with LiveKit, OpenSIPS, Kamailio, or similar platforms. Real experience with AI voice/telephony integration (TTS, STT, call control APIs, LLM workflow integration). Mastery of call concurrency, load balancing, RTP/media streaming, SBCs, NAT/firewall handling, etc. Solid skills in troubleshooting, profiling, and scaling real-time distributed systems. Track record of automating deployment/management (Kubernetes/Docker/Cloud infra). Clear, direct communicationâno fluff. Bonus Experience with CPaaS integrations (Twilio, Plivo, Vonage). Knowledge of call center automation or conversational AI platforms. Past projects with high-throughput WebRTC/SIP hybrids. Who Should Apply If youâre the person that others call when their VoIP stack melts under load or when AI voice integration hits a wall, we want you. Youâre comfortable being the authority in the roomâand delivering solutions that work at scale. Show more Show less
