I am looking for an experienced developer to build a secure login system using PHP, MySQL, and JavaScript. The system should include: - User registration and login with encrypted passwords. - Session management to ensure secure access. - Protection against common security threats (SQL Injection, XSS, CSRF). - Clean and modular code structure for easy maintenance. - Responsive design for desktop and mobile devices. - Clear documentation for future updates. The goal is to create a reliable and professional authentication module that can be integrated into a larger web application.