Backend Developer Needed — Real-Time Multi-User App (Supabase)

I'm building a social app where friends create private rooms, queue music together, and can pull in a live DJ. There's already a working front-end prototype built (rooms, YouTube-link queue, DJ profiles, user profiles) — I'll share the file and full technical spec with selected candidates. What I need for this first phase: - A real backend (Supabase preferred) so multiple people, each on their own device, can join the same room and see the same synced queue update live - Basic user accounts (email/password or magic link is enough) - Deployed somewhere reliable Not needed yet: payments, native live video streaming, or a mobile app. To apply, please tell me: 1. Have you built real-time, multi-user apps before — specifically things where multiple people see live updates together? 2. A link to something similar you've actually shipped. 3. Have you worked with Supabase specifically for real-time syncing between users? I'd like to start with a small, paid trial task before committing to the full scope.