Shopify site maintenance

I am looking for a reliable freelancer to help me with the ongoing maintenance of my Shopify site. The maintenance will be done on a monthly basis, with the primary focus being on adding new products and occasionally helping with designing new content. The freelancer should have experience working with Shopify, and be willing to take the initiative on keeping my store up-to-date with modern design standards. I am looking for someone to form a long-term relationship with, as my business grows. In order to ensure that this partnership works in both of our favor, I am happy to provide feedback and discuss ideas that the freelancer may have.