PHP Developer for Web App Updates

I'm in need of an experienced PHP developer to help fix, update, and make necessary adjustments to my web app. The project involves comprehensive updates across several areas including the user interface, database, and APIs.

Key Requirements:
- User Interface: Implement design/layout changes, fix existing bugs, and add new features to enhance user experience.
- Database: Perform schema changes and optimize performance to ensure efficient data handling and retrieval.
- APIs: Update and refine API integrations for improved functionality and reliability.

Ideal Skills and Experience:
- Strong proficiency in PHP and web development
- Experience with UI/UX design and implementation
- Expertise in database management, including schema design and performance tuning
- Familiarity with API development and integration
- Problem-solving skills and attention to detail

I'm looking for someone who can effectively address these areas and contribute to the overall improvement of the web app. If you have the skills and experience required, I'd love to hear from you.