Social Media Graphic Designer

I'm looking for a talented graphic designer with a knack for creating eye-catching post designs and infographics. The purpose of these creations will be to support a social media marketing campaign aimed at promoting a specific product/service. The platforms targeted for this campaign are Facebook, Instagram, and Twitter. A successful bid will demonstrate experience with social media graphic design and a portfolio of similar work. Knowledge of the unique requirements and aesthetics of each platform is a plus.