Senior Full Stack Developer Needed (React, NestJS, FastAPI)

We're looking for a senior full stack developer to build an internal admin dashboard for our SaaS. Backend is already Supabase, Postgres plus Auth. The dashboard shows our user list, subscription status, and recent activity, and lets the support team extend trials, issue refunds, and pause accounts. It touches billing and user data, so the permission model has to be right. Required experience: Shipped internal tooling or admin panels with user and subscription management React 18 and TypeScript on Next.js Node.js and NestJS for the API gateway layer Python and FastAPI for business logic services Supabase Auth with role-based access control (RBAC), admin and support roles Supabase Row Level Security (RLS), or equivalent row-level permissions in PostgreSQL REST API design across a multi-service backend Senior level, makes architecture calls without direction Clean and functional beats beautiful. The code needs to be legible enough for a junior to extend in six months, with permissions enforced at the data layer rather than only in the UI. About a week of work. If phase 2 goes ahead, a second engineer joins for you to lead.