Authority Score Upgrade for SEO

I need to improve my website's authority score, particularly through technical SEO and high domain authority backlinks for https://cleaning-leather.com/

Key tasks include:
- Technical SEO
- Site speed optimization
- Fixing broken links
- Enhancing mobile friendliness

- Backlink Acquisition
- Securing backlinks from high domain authority websites

Ideal candidates should have:
- Proven experience in technical SEO
- Strong portfolio of high domain authority backlinks
- Excellent communication skills

Please provide a detailed plan and timeline with your bids.