Shopify full store customization, SEO and speed optimization.

I am looking for a Shopify expert who can help me with full store customization, SEO, and speed optimization.

Customization:
- I need both design/layout and functionality/features to be customized for my Shopify store.

SEO:
- I am open to suggestions for a preferred SEO strategy.

Speed Optimization:
- Speed optimization is very important for my Shopify store.

Ideal Skills and Experience:
- Strong experience in customizing Shopify stores, including design/layout and functionality/features.
- Expertise in SEO strategy and implementation.
- Proven track record in optimizing website speed for improved performance.
- Knowledge of best practices and techniques for enhancing SEO and website speed on Shopify.
- Excellent communication skills and the ability to collaborate effectively.