Finnish students often work during their studies. This usually means having a part-time job or working outside the term periods. It’s possible to find English speaking jobs in Finland. Please note, however, that there are some work regulations concerning international students.
Part time work
Most Finnish students work part-time at some stage of their studies. Usually, this means working in the evenings or during weekends. You don’t have to be fluent in Finnish or Swedish since there are English speaking jobs in Finland as well. But it is best not to count on part-time work as a way to finance your studies, as it cannot be guaranteed that you will be able to find a job. However, it is certainly worth a try once you are in Finland.