Deutsche Bahn has two job postings. The first is to work on the timetable system. The second is a full stack developer including Angular and React front ends. You of course need the right to work in Germany and the jobs are in German so good German knowledge is important. Check the job postings for further requirements.
Finally iq digital media is also looking for a full stack developer. Again you need the right to work in Germany and the posting asks for C1 level of German.