Social media posts deigns

I am looking to find a designer who i can work with 1 or 2 days per month and then grow with them when more projects come in. The designer needs to be able to produce simple social media posts plus on occasions flyers and brochures.
All designs must be done in Indesign and will need to be saved into a dedicated dropbox folder where i can store all the files (you will be sent a link)
You will need to be able to follow a brand style - ie colours/fonts etc
You will be supplied with content for each social post.