Here's a refined job posting for your project:
We are seeking an intermediate-level Web Developer to assist in building a website and back end database. This project requires a solid understanding of both front-end and back-end development to ensure smooth functionality and usability throughout the site.
Key Responsibilities:

    Website Design & Development: Build a user-friendly, responsive website using HTML/CSS and JavaScript for front-end functionality.
    Back end Database Implementation: Develop and manage a MySQL database to handle data storage, retrieval, and management.
    PHP Integration: Use PHP for server-side logic and database interaction.
    User Experience (UX) Optimization: Ensure the website provides a seamless experience across devices and browsers.
    Testing & Debugging: Continuously test the website for bugs, compatibility issues, and performance optimization.

Required Skills:

    HTML/CSS for designing responsive web layouts
    JavaScript for front-end interactivity
    PHP for server-side development and database handling
    MySQL for database design, implementation, and management
    Prior experience in web development and database management
    Ability to collaborate, communicate effectively, and meet deadlines

Project Duration:

The project is estimated to take 1-3 months to complete, depending on the scope and complexity of the tasks.

If you're passionate about building websites with robust back ends and have experience in the above technologies, we would love to hear from you!