Backend Dev to Migrate Live React App to Supabase (Postgres + Auth + Row-Level Security)

I have a fully built, live React web app that currently stores all data in the browser's local storage. I need an experienced developer to migrate it to a real cloud backend using Supabase so data syncs across devices and is secure per-user. This is a well-defined project, I have a complete written spec (data schema, every storage key mapped to a proposed table, security requirements, and phased milestones with acceptance criteria). You will not have to reverse-engineer anything. I'll share the spec with shortlisted candidates. Scope - Set up Supabase (Postgres, Auth, Storage) - Replace the current local-storage data layer with Supabase - Implement real user authentication (replacing a placeholder login) Enforce Row-Level Security so users can only access their own data Move photo/document files to Supabase Storage with matching access policies - Preserve offline-first behavior with sync-on-reconnect - Deliver against clearly defined, testable milestones You're a great fit if you have: - Strong experience with Supabase (or Postgres + auth + RLS) and React - Shipped at least one production app with per-user data and real authentication - Can show me examples of Row-Level Security / multi-tenant data you've built - Clear communicator who works in defined milestones To apply, please: 1. Briefly describe a similar app you've built where users only see their own data, and how you secured it. 2. Tell me your experience specifically with Supabase RLS. 3. Give me a rough fixed-price range for Phases 1–4 (auth + core sync + files), understanding you'll refine it after seeing the full spec. 4. Include the word “moss" at the top of your reply so I know you read this. Budget: fixed-price by milestone, limited startup budget — looking for strong value, not the cheapest bid. Potential for ongoing work if the first phase goes well — including a larger analytics/admin dashboard build for the right person.