Senior Full-Stack Developer — Next.js 16 / Supabase / Stripe / PostHog

About the Project InsideView is a SaaS platform for boutique hotels and haciendas in Yucatan, Mexico. It combines Matterport 3D virtual tours with live co-browsing sessions — venue coordinators guide remote clients through a shared virtual space in real time, replicating the experience of a physical site visit. The core platform (authentication, coordinator dashboard, guest virtual room, admin panel, session management) is fully built and production-ready. We are now moving into the next phase focused on Stripe billing integration and advanced analytics dashboards. What You Will Be Working On 1. Stripe Subscription Billing - Replace the current manual invoice tracker with automated Stripe subscription billing - Implement Stripe Checkout and Customer Portal for self-serve plan upgrades/downgrades - Build Stripe webhook handler to sync subscription status, plan tier, and payment events to Supabase - Connect billing state to existing plan enforcement logic (session limits per plan tier) - Admin billing page update: show live Stripe subscription status alongside manual records 2. Advanced Analytics Dashboards (PostHog) - Design and implement coordinator-facing analytics: sessions per month, average tour duration, guest return rate, top-performing spaces - Instrument key events in the codebase (session started, guest joined, invite sent, space viewed) using the existing PostHog integration - Build an analytics summary page in the coordinator dashboard using data from PostHog and Supabase - Admin-level analytics: cross-organization usage trends, plan utilization per organization Requirements Must Have - 3+ years working with Next.js App Router (Server Components, Server Actions, Route Handlers) — not Pages Router - Solid TypeScript skills — the codebase uses strict mode throughout - Previous experience integrating Stripe subscriptions, webhooks, and the Customer Portal in a SaaS context - Experience with Supabase or equivalent (Postgres, RLS, Auth, Edge Functions) - Familiarity with Tailwind CSS and component libraries (shadcn/ui or similar) - Comfortable working in an existing, production codebase — not building from scratch - Able to read and follow specification documents before writing code Nice to Have - Previous experience with PostHog event instrumentation and dashboard configuration - Familiarity with Matterport SDK or SuperViz - Experience building multi-tenant SaaS applications - Spanish language (basic) — UI copy is bilingual ES/EN