Shopify Website Enhancements Needed

I'm seeking a skilled Shopify developer to assist with several enhancements on my website. My primary goal is to improve the user experience on category pages by adjusting content layout. I want to add a category introduction above the products and more detailed content below, without pushing the products too far down the page. Additionally, I need to relocate the email collector box to the header for better visibility and engagement.

Key Requirements:
- Modify category pages to include content above and below products without affecting product visibility
- Relocate the email collector box to the header
- Display 1-5 star ratings on multiple pages, not just product pages
- Assist with integrating and managing apps for certain products
- Contact us page

Ideal Skills and Experience:
- Proficiency in Shopify development and customization
- Experience with improving user experience and SEO on e-commerce sites
- Ability to implement design changes and manage app integrations
- Strong problem-solving skills and attention to detail

I'm looking for someone who can provide ongoing support as I frequently update and manage multiple websites. Please let me know if you can help and provide your pricing.