Senior backend developer - llm agent platform

About the Role
Seeking a Senior Backend Developer to build and scale a production-grade LLM agent platform. You’ll work with advanced AI orchestration (Lang Graph, Lang Chain), high-performance async Python services, real-time streaming, multi-provider LLM integrations, and enterprise-grade safety/guardrails. This is not prototype work—the platform is fully tested, observable, documented, and built for scale.
Core Tech Stack
Backend & Services
- Python 3.11+, async/await, mypy (strict typing)
- Fast API for async APIs (Open API docs)
- Pydantic v2
- UV package manager
- Docker (optimized multi-stage builds)
AI & Orchestration
- Lang Graph + Lang Chain workflows
- Multi-provider LLM support (Open AI, Anthropic, Azure Open AI, Open Router)
- Dynamic model switching
- Human-in-the-loop (HITL) patterns
- Guardrails AI (PII, toxicity, prompt injection protection)
- MCP for external tool integrations
Infrastructure / Dev Ops
- Postgre SQL / ...