I'm a iOS Developer at XING 1 in Hamburg. In addition to iOS development, I also do a fair share of Rust and Non-iOS Swift in my spare time. In addition to that, I used (and sometimes still do) to produce electronic music. Some remnants of this can be found here.
Here is a list of other sites of relevance with more information.
XING is the leading business network for the German-speaking market.