Senior Software Engineer, Voice AI

Role Description This is a high-autonomy, high-agency position for a voice AI engineer who thrives at the intersection of real-time systems, conversational AI, and healthcare. You'll own the architecture and delivery of Natera's Voice AI platform — a production system handling thousands of patient calls daily that provides automated test status, identity verification, billing support, and intelligent routing to human agents. You'll work across the full voice AI stack: telephony, speech-to-text, LLM orchestration, text-to-speech, and analytics — building agentic conversational systems that directly improve patient access to their genetic testing results. This role requires deep understanding of the intricacies unique to voice AI: real-time audio streaming, turn-taking, interruption handling, latency optimization, and the orchestration challenges that distinguish voice from text-based AI systems. Your work will span two critical domains: 1. Voice AI Platform Engineering Design, build, and operate Natera's production voice AI system. This includes multi-agent orchestration, real-time WebSocket audio pipelines, telephony integration, and the voice-specific challenges of latency management, VAD tuning, barge-in handling, and ASR accuracy for medical terminology. 2. Agentic Conversational Architecture Architect and implement autonomous agent workflows that handle complex patient int...