Complete React-Express-Firebase Build

I already have a partially-built web app running on React for the front end, Express.js for the API layer, and Firebase for authentication, data, and hosting. The skeleton is there, but many screens are still placeholders and several workflows are unfinished... (Budget: ₹37500 - ₹75000 INR, Jobs: AngularJS, API Development, Backend Development, CI/CD, Frontend Development, JavaScript, Node.js, PHP)