Even if it is legally possible to work in France as an international student with a long term visa, it is not advised to take a part-time job, since the master's program is very demanding and requires full dedication and having a part time job be very detrimental for the studies.
It may be also very hard to find a job around the campus without a good grasp of French language. EURECOM wishes to stress that it cannot provide job opportunities for students on its campus during the academic year.
More info here: https://www.campusfrance.org/en/working-student
