WordPress Speed & Mobile Optimization

My WordPress site is currently experiencing slow loading times, a high page size, and render-blocking resources. I've also noticed that the text and content layout isn't properly responsive on mobile devices.

Key Points:
- Issues: Slow loading time, High page size, Render-blocking resources
- Recent Changes: Yes
- Mobile Responsiveness: Text and content layout

I'm looking for a WordPress expert who can:
- Diagnose the performance issues and optimize the site for faster loading times
- Ensure the site is fully responsive on mobile, particularly addressing the text and content layout
- Identify and rectify any recent changes that might have negatively affected the site's speed and optimization

Ideal Skills:
- Proficiency in WordPress
- Experience in site optimization and performance tuning
- Strong understanding of mobile responsive design and UI/UX
- Ability to troubleshoot and fix issues related to render-blocking resources
- Good communication skills to explain the changes made for future reference.

Please only apply if you have a proven track record in handling similar projects and can deliver efficient results.