Senior Backend Developer (NodeJS)

We’re a reimagining how specialty clinics operate through advanced voice AI and multi-agent systems. Our platform powers intelligent, real-time phone and SMS conversations for healthcare, blending state-of-the-art AI with secure, scalable backend infrastructure. Join a small, ambitious team where your work directly shapes the future of patient engagement and care delivery. What You’ll Do Architect and build scalable backend services in Node.js and TypeScript Design and integrate RESTful and GraphQL APIs (internal and third-party) Develop and optimize real-time voice AI systems, including telephony (Twilio, WebRTC) and conversational agents Contribute to the design and implementation of multi-agent AI systems for complex, stateful healthcare workflows Work with LLMs and help shape our AI engineering frameworks (tool calling, retrieval, orchestration) Optimize deployments and infrastructure on GCP (Kubernetes, containers) Improve CI/CD pipelines (Cloud Build, GitHub Actions) Collaborate with frontend, product, and AI teams to ship features fast Champion best practices for performance, scalability, and security What We’re Looking For 5+ years of backend experience with Node.js and TypeScript 3+ years building real-time communication systems (WebRTC, WebSockets, or telephony) Experience with voice AI, conversational agents, or multi-agent system architectures Experience in healthcare software (HIPAA compliance) or deep real-time systems expertise (both is a plus) Startup mindset: You thrive in fast-paced, high-ownership environments