Full-Stack Developer — Next.js 14 + Supabase SaaS MVP

I have a working prototype of a multi-tenant SaaS platform built in a low-code tool. I need an experienced developer to rebuild it properly — hardened architecture, real security, production-ready for paying customers, and accessible as both a web app and a PWA (installable on mobile without a native build). What you'll build Next.js 14 app deployed on Vercel with Supabase backend Row-Level Security and multi-tenant architecture (org_id from day one — this must be implemented correctly, not retrofitted) Supabase Auth (email + Google OAuth) Subscription-gated feature access via Stripe (4 tiers) Data-driven UI with dynamic filtering, modals, and chart visualisations Financial modelling calculations rendered in the frontend Behavioural analytics instrumentation via Mixpanel (event schema provided) Structured data ingestion script (manual trigger for MVP) Progressive Web App (PWA) configuration for mobile installability QA including written tenant-isolation tests proving cross-tenant data cannot leak Tech stack Next.js 14, Supabase (PostgreSQL + RLS), Vercel, Stripe, Mixpanel, Chart.js, Tailwind CSS What I need from you Proven Supabase RLS and multi-tenant SaaS experience — the most critical requirement Next.js 14 App Router, full-stack Stripe subscriptions with feature gating PWA configuration experience (service workers, manifest, offline handling) Clean handover: documented schema, environment setup, README Working style Non-technical founder with a detailed build spec ready to hand over. 1–2 sync calls per week (Sydney timezone), async between. All accounts stay under my ownership — you're added as a developer. To apply Show me a multi-tenant SaaS or RLS-heavy project you've shipped. GitHub link is a strong plus. Generic proposals won't be reviewed.