Mobile Full-Stack Developer (React/Next.js + Supabase) – Frontend Wiring & Logic Integration

Project Overview: We have a mobile-first assessment application where most of the frontend UI and Supabase database tables are already built. We need an experienced full-stack developer to clean up remaining UI states, wire existing buttons and navigation to our Supabase backend, set up Stripe payments, and stabilize our interactive assessment feature. Scope & Milestones ($200 Fixed Price): Milestone 1 ($100) – Data Wiring, View States & Auth Cleanup: Clean up mobile responsive CSS and layout on the multi-step registration flow. Ensure user sign-ups integrate cleanly with Supabase Auth and write to the profiles table. Wire disconnected buttons and forms to active database tables (documents, application_checklist, application_conversations, knowledge_base,etc). Ensure UI states update correctly across all tabs based on user actions. Milestone 2 ($100) – Stripe Checkout & Assessment Feature: Implement Stripe checkout integration using provided API keys. Set up the Stripe webhook handler to record transactions in the payments table and unlock paid features. Debug the interactive assessment view: fix webcam/mic permission triggers, timer-based 6-question flow, and MediaPipe face/eye tracking state handling. Requirements: Strong hands-on experience with Next.js/React, Supabase (Auth, RLS, Storage), and Stripe API integration. Experience handling browser media streams (WebRTC/MediaPipe) in React. Clear communication and fast turnaround. Willingness to sign a standard NDA before receiving repo access.