Senior Backend Engineer – Node.js + AI/LLM

Hiring: Senior Backend Engineer – Node.js + AI/LLM

📍 Location: Phoenix, AZ – Hybrid
💼 Type: Contract

We’re looking for a Senior Backend Engineer with strong Node.js/TypeScript + AI/LLM experience to build scalable backend systems and production-grade agentic AI solutions.

🔹 Required Skills

✅ Node.js & TypeScript
✅ Backend/API development – REST, Microservices
✅ AI/LLM systems & Agentic AI
✅ LangGraph / LangChain / Airflow or similar orchestration frameworks
✅ RAG pipelines, retrieval & grounding
✅ LLM infrastructure, inference & model gateways
✅ AWS and/or Google Cloud Platform
✅ Kubernetes
✅ Distributed systems & event-driven architectures
✅ Strong experience designing scalable, reliable backend systems
✅ Experience with Go is a plus

🔹 What You’ll Do

• Design and develop high-performance backend services and APIs
• Build and operate production-grade agentic AI systems
• Design agent orchestration, planning, tool-use and memory strategies
• Develop RAG and LLM-powered capabilities
• Drive architecture decisions around autonomy, reliability, scalability, safety and cost
• Build evaluation, observability and safety tooling for AI systems
• Lead technical design discussions and collaborate with cross-functional teams