Senior Full-Stack Developer Needed to Stabilize & Complete SipVault / Document & Form Management System

I have an existing SaaS application called SipScale that is already substantially built in Replit/React/TypeScript with an existing backend, database, authentication, and document/form functionality. ... (Budget: $1500 - $3000 USD, Jobs: API Development, Database Design, Full Stack Development, Node.js, PostgreSQL, React.js, SaaS, Software Architecture, Typescript, Web Application)