Native German for Content Translation

I am looking for a native German translator and proofreader for a website that is now starting to work in Germany. We want the users that are based in Germany to see the website as trustworthy and legit.
The job will be mainly proofreading the actual content in pages, translating product sheets, blog posts and managing the German part of the site. Basic WordPress knowledge is mandatory since that's the CMS the website is built in.
Candidate also must have a good level of English since those are the languages we'll be using to communicate with me.