Bilingual SEO Enhancement for 20 Articles

I need an experienced SEO specialist to improve the SEO of 20 articles in both Italian and English on a news portal and on a blog. The articles on the news portal are currently published using the Math Rank SEO plugin.

The improvements should focus on:
- Keyword optimization
- Meta descriptions and tags
- Internal and external linking

Ideal Skills and Experience:
- Proven SEO expertise, particularly with Math Rank SEO
- Fluency in both Italian and English
- Strong understanding of keyword research and optimization
- Experience in crafting effective meta descriptions and tags
- Ability to enhance internal and external linking strategies

Please provide examples of previous work and expected timelines.