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 (LangGraph, LangChain), 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)
FastAPI for async APIs (OpenAPI docs)
Pydantic v2
UV package manager
Docker (optimized multi-stage builds)
AI & Orchestration
LangGraph + LangChain workflows
Multi-provider LLM support (OpenAI, Anthropic, Azure OpenAI, OpenRouter)
Dynamic model switching
Human-in-the-loop (HITL) patterns
Guardrails AI (PII, toxicity, prompt injection protection)
MCP for external tool integrations
Infrastructure / DevOps
PostgreSQL / SQLite / Redis ...