Full-Stack Developer for Therapy Platform

We are looking for an experienced full-stack developer to assist with reviewing, debugging, improving, and maintaining an existing custom web platform. The platform is already built and live. It includes user accounts, role-based dashboards, admin functionality, payment-related features, service/status workflows, and custom business logic. We need a developer who can review the current codebase and deployment setup, identify issues, make clean improvements, and provide reliable ongoing support. This is not a basic website project. We need someone who understands full-stack application structure, frontend/backend communication, database logic, hosting environments, payment workflows, version control, and long-term maintainability. The initial work will include reviewing the current platform structure and providing a clear technical assessment before making major changes. Required experience: Full-stack web application development Experience working on existing custom platforms React, Next.js, JavaScript, or similar frontend experience Node.js, Express, or similar backend experience Database experience with MongoDB, PostgreSQL, or MySQL GitHub/version control Hosting and deployment experience Stripe or payment integration experience preferred Ability to troubleshoot carefully without breaking live systems Clear communication and consistent updates