Job Description

We're looking for a Voice Infrastructure Engineer to architect and scale the telephony backbone behind thousands of AI voice agents where every millisecond matters.

Responsibilities

  • Architect a carrier-grade SIP/SBC infrastructure for AI voice.
  • Reduce end-to-end latency to less than 500 ms.
  • Design WebRTC + SIP hybrid systems.
  • Integrate telephony stacks with STT/TTS/LLM pipelines.
  • Handle real-world SIP, codec, and NAT challenges (yes, even at 2 AM! ).

Requirements

  • 3-5+ years with FreeSWITCH, Kamailio, Ribbon, Mediacode, Asterisk, and OpenSIPS.
  • Strong SIP/SDP knowledge and SBC management.
  • Hands-on with RTP/SRTP, codecs, jitter, and packet loss.
  • Programming in C/C++/Rust.
  • Experience in Linux, networking, and high-availability voice systems.
  • Bonus: Voice AI tools (Deepgram, ElevenLabs, Twilio), Kubernetes, CPaaS.

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