بازنویسی، دیباگ و بهبود کامل سایت

با سلام ما یک سایت از قبل نوشته شده با PHP pure داریم که باید کامل خونده بشه و مجددا دیباگ و بهبود داده بشه شرایط در متن زیر اورده شده : Full-Stack Developer As our Full-Stack Developer, you will bridge the gap between visual experience and server-side logic. You will build responsive interfaces for coaches and clients, develop robust APIs to handle scheduling and payments, and ensure real-time features (chat, notifications) work flawlessly. You will transform product requirements into fast, secure, and scalable code. Requirenment & Must-Haves: 5+ years of professional full-stack development experience. Frontend: Deep proficiency in React (or Vue) and TypeScript. Experience with Tailwind CSS or Material UI. Backend: Strong experience with PHP/Laravel, Node.js (Express/NestJS) or Python (Django/FastAPI). Database: Solid SQL skills (MySql, PostgreSQL) and experience with an ORM (Prisma, TypeORM, or SQLAlchemy). Real-time features: Experience with WebSockets (Socket.io, Pusher) or similar. API design: Building scalable, versioned APIs with proper authentication (JWT, OAuth2). Version control: Git branching strategies (GitFlow, trunk-based). Testing: Unit/integration testing (Jest, Pytest, React Testing Library). Nice-to-Haves (Standout Skills) Experience with WebRTC Familiarity with event-driven architectures (RabbitMQ, Redis Pub/Sub). Knowledge of calendar APIs (Google Calendar). Experience building progressive web apps (PWAs) with offline sync. Past work in EdTech, coaching, or marketplace platforms. Exposure to Docker.