Need an seo specialist to bring in sales and rank better in google

I am looking for a long-term SEO specialist to help bring in sales and improve our website's ranking on search engines like Google. I'm looking for an immediate engagement with services that encompass both on-page and off-page SEO, such as content optimization and link building. The goal of the project is to draw more leads, improve our website's visibility, and increase sales. This engagement should last for 6+ months and any additional support or services that could help reach our goals are welcomed. The ideal candidate will have a great track record, a wealth of experience in SEO, and can demonstrate tangible results with past projects.