Note: The job is a remote job and is open to candidates in USA. Natera is a global leader in cell-free DNA testing, dedicated to oncology, women’s health, and organ health. They are seeking a Software Engineer III to design, develop, and maintain their Voice AI platform, which enhances patient access to genetic testing results through automated call handling.

Responsibilities

• Take ownership of assigned voice AI features and components, guiding them through the full software development lifecycle
• Contribute to design discussions, code reviews, and best practice adoption within the Voice AI team
• Drive technical decisions on voice pipeline optimization — VAD tuning, turn-taking, interruption handling, and latency management
• Plan and prioritize tasks in an Agile environment, ensuring timely and high-quality delivery
• Work with Product Managers and stakeholders to refine requirements and scope technical efforts for conversational AI features
• Monitor voice platform health metrics (call efficacy, ASR accuracy, per-segment latency) and prioritize improvements based on data
• Mentor junior team members, sharing knowledge and best practices in voice AI architecture, TypeScript, and real-time systems
• Encourage a culture of continuous learning and technical excellence through pair programming and design reviews
• Document voice AI patterns, integration contracts, and operational runbooks for the team
• Partner with Product Managers, QA, and clinical operations to gather requirements, validate conversational designs, and guide projects from inception to deployment
• Coordinate with other engineering teams to integrate voice agents with internal services via authenticated APIs
• Work with the analytics team to ensure voice metrics flow correctly through the data pipeline for reporting and optimization
• Drive improvements in our multi-agent orchestration approach — tool calling patterns, agent handoff logic, and state management across conversation turns
• Advocate for high-quality standards and automated testing strategies for conversational AI systems, including voice-specific test patterns (simulated calls, transcript validation, latency benchmarks)
• Identify and resolve voice-specific UX issues: ASR errors on medical terminology, silence detection tuning, barge-in recovery, and end-to-end response latency

Skills

• 5+ years of overall software development experience, focusing on scalable backend services using Node.js and TypeScript
• 1+ years of experience with voice AI, conversational AI, or real-time audio systems in production
• Hands-on experience with agentic LLM architectures — tool calling, multi-agent orchestration, prompt engineering, and conversation state management
• Familiarity with voice AI pipeline components: STT (Deepgram, Azure Speech, OpenAI Whisper), TTS (ElevenLabs, OpenAI, Cartesia), and LLM APIs (OpenAI Realtime API, Anthropic Claude)
• Experience with telephony systems — Twilio (media streams, SIP, IVR) or equivalent WebSocket-based audio streaming platforms
• Understanding of voice-specific challenges: VAD configuration, turn-taking, interruption handling, latency budgets, and audio codec management (mulaw/PCM)
• Solid understanding of the software development lifecycle (SDLC), including build, configuration, release, and deployment
• Knowledge of microservice architecture and distributed systems best practices
• Proficiency with AWS services (ECS Fargate, Lambda, DynamoDB, S3, Kafka/MSK, API Gateway)
• Experience with event-driven architecture and message processing (e.g., Apache Kafka, SQS)
• Strong relational database skills (MySQL) and exposure to NoSQL databases (DynamoDB, Redis)
• Demonstrated teamwork skills and a collaborative mindset
• Excellent communication and organizational skills
• Experience with RAG architectures (AWS Bedrock, vector stores, embedding models)

Benefits

• 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

Company Overview

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