NodeJS Backend Enhancements for AI SaaS

I need an experienced backend developer to jump into an existing Python + Node.js codebase and complete a discrete set of enhancements. The scope is tight—everything should comfortably fit into a five-hour... (Budget: $15 - $25 USD, Jobs: AI Development, FastAPI, Git, Java, JavaScript, Node.js, NoSQL Couch & Mongo, PostgreSQL, Python, REST API)