• Design, build, and operate greenfield SIP trunking infrastructure connecting carrier-grade telephony to our internal voice AI platform. • Architect and implement real-time bidirectional audio streaming pipelines to support our ECS-based voice stack. • Design autoscaling strategies for stateful, connection-based workloads, enabling the platform to scale dynamically based on connection ingress and concurrent call volume. • Implement call routing, inbound/outbound dialing flows, and media transport (RTP/SRTP). • Integrate with Amazon Connect to bridge carrier connectivity into our custom infrastructure. • Collaborate with ML engineers, product managers, and other stakeholders to ensure the telephony layer meets the needs of our voice AI systems. • Ensure outbound dialing infrastructure complies with TCPA regulations and supports STIR/SHAKEN attestation.