Senior Software Engineer, Voice AI

🕒 Julho 2

🇺🇸 Estados Unidos – Remoto (EUA)

💵 $125.000 - $156.000 / ano

⏰ Tempo Integral

🟠 Sênior

🤖 Engenheiro de IA

🦅 Patrocina Visto H1B

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Natera

SiteLinkedInTodas as Vagas

1001 - 5000 funcionários

Fundada em 2004

🏥 Saúde

🧬 Biotecnologia

⚕️ Seguro de Saúde

Healthcare • Biotechnology • Healthcare Insurance

A Natera é líder global em tecnologia de testes de DNA livre de células (cfDNA), especializada em testes e diagnósticos genéticos não invasivos. As soluções inovadoras da empresa concentram-se em áreas como triagem pré-natal, detecção de câncer e monitoramento de transplantes de órgãos. Ao utilizar bioinformática avançada e análise de DNA, a Natera oferece a profissionais de saúde e pacientes informações essenciais para decisões médicas mais embasadas.

Descrição

• Own the end-to-end voice AI architecture — from Twilio media streams through LLM orchestration to TTS output and call disposition. • Design and implement multi-agent systems using tool calling, agent handoffs, and shared conversation state for complex patient workflows. • Build and optimize real-time audio pipelines — WebSocket streaming, codec handling (mulaw/PCM), VAD configuration, and interruption management. • Architect analytics and observability infrastructure for voice-specific metrics: per-segment latency (STT/LLM/TTS), call efficacy, disposition accuracy, and ASR error rates. • Solve voice-specific challenges: turn-taking timing, silence detection thresholds, barge-in recovery, medical term recognition, and end-to-end latency optimization. • Integrate voice agents with internal services via secure authenticated APIs. • Drive platform reliability — eliminate single points of failure, implement multi-provider LLM failover, and design graceful degradation paths. • Collaborate with product and clinical operations to improve self-serve efficacy rates and reduce call escalations. • Mentor team members on voice AI best practices and contribute to architectural decisions.

🎯 Requisitos

• 5+ years of software engineering experience, with at least 2 years building production voice AI or conversational AI systems. • Deep experience with voice AI pipelines — you understand the end-to-end flow from telephony through STT, LLM processing, TTS, and back to the caller, and you've solved real problems at each stage. • Production experience with agentic architectures — multi-agent orchestration, tool calling, agent handoffs, memory/state management, and LLM-driven decision making in real-time conversation contexts. • Strong understanding of voice-specific challenges: VAD tuning, turn-taking, interruption/barge-in handling, latency budgets, audio codec management, and the differences between voice and text-based AI UX. • Hands-on experience with telephony systems — Twilio (media streams, SIP, IVR), or equivalent platforms with WebSocket-based audio streaming. • Proficiency in TypeScript/Node.js with strong async programming patterns; experience with NestJS or similar frameworks. • Experience with STT/TTS providers (Deepgram, OpenAI, ElevenLabs, Azure Speech) and understanding of ASR accuracy challenges (domain-specific vocabulary, noise handling). • Production experience with LLM APIs — OpenAI (especially Realtime API), Anthropic Claude, or equivalent; prompt engineering for conversational agents. • High agency and autonomy — you don't wait for permission, detailed specs, or hand-holding. You unblock yourself, seek out the highest-impact work, and drive it to completion. • Excellent communication — you can translate complex voice AI architecture decisions for product and clinical stakeholders.

🏖️ Benefícios

• Comprehensive medical, dental, vision, life and disability plans for eligible employees and their dependents. • Free testing for Natera employees and their immediate families. • Fertility care benefits. • Pregnancy and baby bonding leave. • 401k benefits. • Commuter benefits. • Generous employee referral program!