Conducting appraisal or job performance interviews requires a sensitive touch. You may have delicate messages. This could be a familiar issue too if you have a coaching role that requires you to give a lot of feedback. That can be a challenge even in your native language. Are you equally good at deploying your communication skills in German?
Could this be for you?
You already have command of German to an intermediary level. That means you already speak German reasonably effortlessly in familiar situations. But you want to learn how to communicate unambiguously, openly and with respect in German as well. It is not always easy to give feedback, especially if you have to do so in a foreign language. You need to be able to introduce nuances in your message and to formulate the right questions while maintaining clarity and avoiding confusion.