No! Plenty of international students find jobs easily in Maastricht without speaking Dutch.
Of course, international students are in a different position from native students. There are going to be some jobs that will be impossible for you. Even if you speak some Dutch, the job may require the fluency of a native speaker. However, there are a huge amount of opportunities for international students who just speak English.
Nevertheless, learning some basics can help impress employers and integrate more fully into the community. In your first year of study (bachelor or master) you are eligible to take part in a free Dutch Course offered by the university. You can look at the language centre of the university for all of your options.