SEO Link Building Outreach and Link Prospecting

I need someone who is familiar with natural link building and link prospecting to find and contact webmasters in related industries.
I have my own content which I would want the webmaster to place on their site as a guest post.
It would be your job to convince them that the content will be beneficial for them.

Must be familiar with SEO and link building or willing to learn how to link build correctly.
If you have examples of link building you have performed in the past, please provide them and explain your methods.