WordPress Website Speed Optimization Specialist

My WordPress website is experiencing slow loading times across all areas, including the homepage, product pages, and checkout process. Even the backend is sluggish. I have Google Analytics set up to monitor performance.

I'm looking for an expert to diagnose and resolve these speed issues.

Ideal skills and experience:
- Strong background in web performance optimization
- Experience with identifying and fixing server-related slowdowns
- Familiarity with website caching, image optimization, and code minification
- Knowledge of best practices for improving load times across various devices

Please provide a detailed approach and timeframe for the solution.

I'd like a list of the steps you make, please.