I will build your saas a backend in fastapi, django, or nodejs

Your frontend is ready. Your backend is the bottleneck:

I build production-grade REST APIs with FastAPI, Flask, Django, ExpressJS backed by PostgreSQL, Redis, and proper async handling. Not a tutorial-quality CRUD app. Real systems that handle authentication, background jobs, third-party integrations (Stripe, S3, external APIs), and scale under load.

What you get:

• REST API built with FastAPI/Flask/Django/ExpressJS (async where it matters)
• Database schema design (PostgreSQL/MySQL)
• JWT/OAuth authentication
• Docker containerization included
• API documentation (Swagger/OpenAPI)
• Basic deployment to your server or cloud

Recent work: built a Chrome extension SaaS backend with Stripe billing and credit metering, and an IoT device management platform handling thousands of devices via MQTT and Kafka.

Message me with your requirements before ordering. Vague scopes get inflated timelines, clear scopes get fast delivery.