Design image creatives for Facebook and Instagram

I am looking for a skilled designer who can create image creatives for my social media accounts (Facebook and Instagram). The purpose of the images is to promote my products. The images should be in a square format with dimensions of 1080x1080px also for Instagram 1920x1080px. As for the visual elements, I am open to suggestions and would appreciate any creative input. The ideal candidate should have experience in creating social media graphics and be able to deliver high-quality designs within a tight timeframe.