Have you tried looking at SEOClerks or Fiverr for this service? They have many talented freelancers there who could probably help you with SEO and other things related to SEO.
I would stay far away from those sites for SEO.
I ranked #3 with a little website I only used fiverr gigs for. was meant as a little side project, and worked pretty good. you have to select very carefully on fiverr though, check for fake reviews and shady stuff first