SEO & Marketing Assistant

Need to hire an employee on a monthly or bi-weekly payment basis, to assist me in SEO work for our marketing agency's clients.

This work would include:
-Posting on Google+ and Google Posts
-Building Backlinks for client websites
-Creating directory listings for businesses
-Copywriting for all client websites (Unique content, no plagiarism)
-Other social media maintenance & advertising
-ANY other digital marketing or computer work needed