Just to add a bit of info: German businesses typically have a 3 month notice period in both directions (though I've seen 6 months). The probation period lets either you or the employer end the employment without a fuss.

This means that it's harder to get a loan or find an apartment until you're over that period. After that, you're golden.

https://allaboutberlin.com/guides/find-a-job-in-berlin#the-p...