Content creator social media platforms

Printright webstore for UK based customers for printer & photocopiers consumables. We are looking for someone who is familiar with Facebook, Instagram Twitter & Linked-in to manage our page and post content on these platforms on a weekly basis ( raw content, ideas, news, images will be provided).
To also be a first responder for messages that are stimulated by publishing activity.
An excellent knowledge of English language is essential. This is a long term project