SEO Keyword Ranking Enhancement

I need an SEO expert to boost my website's visibility and search engine rankings on Google. Our primary focus is on-page SEO to improve our rankings for the following keywords:

- SMAD
- SMAD3
- Cancer
- Anti-cancer
- Fibrosis

Requirements:
- Improve on-page SEO for targeted keywords
- Expertise in Google SEO practices
- Proven track record of improving keyword rankings

Please provide your availability, proposed approach, and estimated cost. Looking to start ASAP.