Enhance SynapseIQ AI Knowledge Platform

I need a seasoned full-stack developer who can dive straight into SynapseIQ’s codebase and raise the quality bar, starting with our document-processing pipeline. The stack is React + TypeScript on the front end and Node.js/Express with SQLite and the OpenAI API on the back... (Budget: $25 - $50 USD, Jobs: AI Development, AI Model Integration, AI Quality Assurance, AI Workflow Automation, AngularJS, Java, JavaScript, Node.js)