AI SaaS Full Stack Developer (Multi-Tenant SaaS) – Next.js, Python & Supabase

We are looking for an experienced Full Stack Developer to work on an existing AI-powered SaaS application built with Next.js/React, Python, and Supabase. The platform is a multi-tenant SaaS application and is already live/in development. We now need an expert developer to help enhance the platform, fix existing issues, optimize performance, and implement new features including payment integration. Current Tech Stack: Frontend: React.js / Next.js Backend: Python Database & Auth: Supabase AI Integrations: OpenAI APIs / AI workflows Hosting: Vercel / Cloud environment Scope of Work: - Fix existing bugs and stability issues - Improve application performance and scalability - Enhance existing modules and workflows - Work on multi-tenant SaaS architecture improvements - Implement Stripe payment integration - Add subscription management and billing flows - Improve authentication and user role handling - Optimize APIs and database queries - Ensure responsive and clean frontend UI/UX - Assist in deployment and production fixes when required Required Skills: - Strong experience with Next.js and React - Strong Python backend development experience - Experience with Supabase - Experience building SaaS and multi-tenant applications - Stripe payment gateway integration experience - REST API development and integration - Good understanding of authentication and RBAC systems - Experience debugging and optimizing production applications - Clean and scalable coding practices