Senior Backend Developer (NodeJS)
Dodo (YC S24) · San Francisco, CA · 12 mo ago
HybridEngineeringFull-time
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: Thrive in fast-paced, high-ownership environments