WordPress Site Enhancement

I'm looking for a skilled WordPress developer to enhance my site with several key features and fixes.

Requirements:
- Add a premium theme from a third-party provider
- Fix existing bugs:
- Broken links or 404 errors
- Slow loading times
- Visual glitches or layout problems
- Integrate Alibaba functionalities:
- Product import/export
- Order synchronization
- Automatic pricing updates
- Add payment options including standard and crypto payments (USDT)
- Implement live updates for orders
- Set up mail notifications
- Create a "Contact Us" form
- Develop a backend dashboard and navigation

Ideal Skills and Experience:
- Proficient in WordPress development and theme integration
- Experience in bug fixing and performance optimization
- Familiar with Alibaba API and eCommerce integrations
- Knowledge of payment gateway integration, especially for cryptocurrencies
- Strong background in backend development and dashboard creation

Please provide examples of previous WordPress projects and confirm your expertise in the required areas. Looking forward to your bids!