Global Digital Marketing and Sales - Brand Management | Buyer Sourcing

Need a motivated person or firm who can get us new buyers of products listed on our website or any other agriculture product across globe. Comfortable working on commission basis on the sales made(2-5%). Who can also help with digital marketing, SEO optimization and brand presence on global level. Handling/Updating social media platforms, creating digital content and posting regularly. Can also pay fixed money for certain tasks. Can be discussed in more detail(Provide a proposal).