Monthly SEO Service

I'm looking for a SEO expert to help me with my website on a monthly basis. I need assistance with link building, as well as leveraging existing keywords. I already have an existing list of keywords that are specific to my website, so I am looking for someone with the expertise to build links to those in order to increase search engine rankings. The service would need to be rendered on a monthly basis. If you think you're the right fit for this job, please reach out and let me know how you plan to make this happen. Thank you!