Graphic designer to create new marketing collateral using existing assets/style guide

Information for the business: We are an app that gathers customer feedback
Industry: Healthcare
Design details: We have a style guide plus raw assets and some templates. We are looking to find a great designer who will be able to help us to use the existing assets (plus perhaps create some new ones in the same style) to update our marketing materials, promo items, business cards, stationery etc.
Target audience: Restaurants, coffee shops, pubs
Number of pages needed: Various (ongoing)
Content on the front/back side and body: We need to update our business cards and flyer to include the new Jar Icon (see below)
Ideas for the visual style: Follow existing template
Things to avoid: Do not start from scratch!
Preferred colors: As per style guide
Extra notes: We have several projects that need to be done, but the first is to update the business cards and flyer attached. We need 3 x business cards (one for each of the founders). Designer needs to change the logo to the new version which we already have.

And we need 2 x flyers - one all on one page to send via email and one over two pages (as per existing version ) to print and give to people. We have a flyer already. Just need to update the logos etc and change some of the layout. See flyer attached below.