Full-Stack Developer Needed for Gym Management Software – React.js + Node.js

We are looking for an experienced Full-Stack Developer to build a modern, responsive Gym Management Software/Web Application using React.js and Node.js. The goal is to create a complete gym management platform that allows gym owners and administrators to manage members, memberships, trainers, classes, attendance, payments, staff, inventory, expenses, workouts, diet plans, reports, and other daily gym operations from one centralized system. The system should also include a member-facing portal where gym members can log in and view/manage their membership, attendance, workout plans, diet plans, payments, classes, and personal information. This will be an MVP version, but the code and architecture should be clean, scalable, secure, and easy to extend with additional features in the future. Please do not send a generic proposal. Start your proposal with the word "GYMAPP" so we know you have read the complete job description. We are looking for a developer who can potentially continue working with us after the MVP for additional features, improvements, integrations, mobile apps, and future versions of the platform. If you have suggestions for improving the architecture or MVP scope, please include them in your proposal.