Optimax Website

We are looking for someone with extensive knowledge of concrete5 to implement new content (text, photos etc.) On our company's website.
If our cooperation works out well, we would like to contact you every now and then on a more longterm basis for general website maintenance. You have to be proficient in English or German.
Optimax Energy is an innovative energy trading company from Germany. We are very successful in providing trading services to our clients.
Also, beside concrete5, we need you to work proficiently with the following.
1. Git - for maintaining the development history, for eliminating conflicts in the code, for rolling back breaking changes, for delivering new features to the server using cd/ci.
2. Docker - to deploy a developer’s work environment identical to the work server. This is necessary to ensure that the code will work on the server in the same way as the developer’s home.
3. Linux - it is nice to know, because the server works on Linux, as well as because Docker is easier to install and work better in Linux than in Windows.