Senior Backend Engineer – Remote (Brazil)

Requisitos

• Design and scale async REST/WebSocket APIs in Python (FastAPI or similar) using dependency injection, type hints, and vertical-slice arch..
• Implement multi-agent workflows (sequential, concurrent, handoff patterns) routing work among specialized LLM agents
• Integrate multiple LLM providers behind a provider-agnostic layer with A/B testing and cost-aware routing
• Build and maintain RAG pipelines against vector stores such as pgvector, Chroma, or managed vector search
• Design schemas and evolve data models with SQLAlchemy/SQLModel-style ORM plus migrations