SEO Enhancement for Existing Website

I'm looking for an experienced SEO specialist to improve the SEO on my existing site.

Key requirements include:

On-page SEO:
- Optimize meta tags and descriptions, particularly meta descriptions.

Off-page SEO:
- Enhance the site's authority and ranking through strategic backlinks and partnerships.

Ideal Skills and Experience:
- Proven track record in improving SEO for established websites
- Strong knowledge of keyword research and competitor analysis
- Expertise in crafting compelling meta descriptions and tags
- Experience with link-building strategies
- Familiarity with SEO tools like Google Analytics, SEMrush, or Moz

Please provide examples of previous work and any relevant certifications.