Advanced SEO & Customer Service Assistant

I'm looking for someone to build out high DA/PA backlinks for my ecommerce store and help out with admin and customer service. The store is on shopify so the person I hire should know Shopify inside and out. It would also help if you have great English skills. As for the SEO part, I need someone who knows what he's doing and can tell the difference between a good backlink and a bad one. Things like domain authority, page authority, trust flow and citation flow are very important. Writing skills are huge plus as I will require help building and maintaining my PBN. I'll need you to log into Ahrefs and copy competitor backlinks. If you know Ahrefs that's a huge plus as well.