Need to create contents for social media

We are a startup, and we are looking for graphic designers who can design content like- posters, catalogues, or personalised messages in a legit way. We are looking for designers who can work with us in a long run game rather than for some limited projects.
You can get the reference of quality of work we expect from the link below:
1.www.mchers.com
2. https://www.instagram.com/p/CUD3Fq_DGaW/