No, speaking German is not mandatory to work in Germany. Speaking German is not always required, especially in international companies or IT jobs, but it can really help. In fields like healthcare, education, and trades, you must have German skills of B1 or B2 level. If you are looking at startups or tech companies in places like Berlin or Munich, you might get by with just English. But if you want to fit in better socially or handle legal stuff, learning German opens up a lot of doors. Plus, some visa programs might ask for proof that you know the language, based on the job you're applying for.