Looking for senior backend developer with Node js and python experience

We're looking for a Senior Backend Developer to help build and scale our platform, ideally with hands-on experience integrating LLM/AI agents into production systems. Responsibilities: Design and maintain scalable REST APIs and backend services Build/optimize agentic AI tool-calling systems (if using LLM APIs like Anthropic Claude or OpenAI) Implement caching strategies, background workers, and queue systems for performance at scale Work with databases (MongoDB/PostgreSQL) and caching layers (Redis) Ensure system reliability under high load (rate limiting, query optimization, worker offloading) Collaborate on cloud infrastructure and deployment (AWS/DigitalOcean) Required Skills: 4+ years backend development experience Strong Node.js / TypeScript (Express, Hapi.js, or NestJS) Experience with MongoDB or PostgreSQL, and Redis REST API design, JWT authentication, WebSockets AWS or similar cloud platform experience Nice to Have: Experience building production LLM/AI agent applications (tool-calling, prompt engineering, prompt caching) Experience with streaming responses (SSE) Background in high-traffic systems (100K+ requests/day) Payment gateway integrations (Stripe) How to Apply: Please share relevant project examples, especially any AI/LLM agent work or high-scale backend systems you've built.