No, Swedish language is not mandatory to work in Sweden. Many companies in Sweden use English, particularly in IT and tech fields, but knowing Swedish can really help. For jobs in healthcare, education, and government, being able to speak Swedish is usually necessary. Even if it’s not a requirement, learning the language makes it easier to fit in, move around in your job, and talk to people in everyday situations. Lots of local governments and employers provide free or low-cost Swedish classes (SFI – Svenska för Invandrare). If you're thinking about applying for permanent residency or citizenship, having some basic Swedish skills is often required.