Hire FastAPI & Python AI Developers

FastAPI has become the undisputed standard for modern AI orchestration and data-intensive SaaS backends because it unites Python's native machine-learning ecosystem with Rust-backed Pydantic v2 validation, asynchronous ASGI concurrency, and auto-generated OpenAPI 3.1 contracts. Yet naive FastAPI codebases routinely stall in production when synchronous CPU or ORM calls block the asyncio event loop under concurrent streaming load.

Eternitech deploys senior FastAPI and Python engineers who understand async I/O boundaries, SQLAlchemy 2.0 async connection pooling, Server-Sent Events (SSE) token streaming, and distributed Celery / Dramatiq task queues—overseen by veteran startup operators in Miami and Tel Aviv.

• Low-Latency Streaming AI & WebSocket Gateways: Non-blocking SSE and WebSocket endpoints streaming LLM tokens, tool status updates, and real-time telemetry directly to Next.js and mobile clients.
• Strict Pydantic v2 & OpenAPI Contracts: End-to-end schema validation generating typed TypeScript SDKs automatically so frontend and backend contracts never drift.
• Async PostgreSQL, pgvector & Worker Pipelines: Tuned asyncpg / SQLAlchemy 2.0 repositories paired with PgBouncer, Redis rate limiters, and durable background workers for heavy document ingestion.
• Production Observability & Container Hardening: Multi-stage Docker builds, Uvicorn/Gunicorn tuning, OpenTelemetry tracing, and ninety-percent-plus pytest async test coverage.

Many Series A and enterprise teams keep their core transactional monolith in Node.js, Laravel, or .NET while introducing a dedicated FastAPI AI sidecar for RAG, embeddings, and agent orchestration. Our operators design clean internal mTLS/JWT boundaries so your new Python AI tier plugs into existing auth and billing without friction.