Full Stack Mobile Developer Needed to Migrate and Launch AI Video SaaS App.

We are looking for an experienced Full Stack Mobile & Web App Developer to take over and complete an existing AI-powered SaaS application. The application has already been built to MVP stage using Base44 and includes a working backend, user authentication, subscription system, AI workflows, video generation, and basic social media publishing features. The next stage is to migrate the application from Base44 into a scalable, production-quality solution consisting of: A fully functional iOS application A fully functional Android application A responsive and lightweight web application