All perfect praise be to Allaah, The Lord of the Worlds. I testify that there is none worthy of worship except Allaah, and that Muhammad is His slave and Messenger.
If the work is permissible in Islam and in accordance with Islamic Law, and this work is neither forbidden nor disliked, then it is permissible to work with non-Muslims. The Muslims dealt with non-Muslims at the time of the Prophet and at the time of the four caliphs and during the time of the generation which followed them, and it is confirmed that the armour of Prophet was mortgaged with a Jew, when he died. Therefore, if a Muslim is a teacher, or professor, or expert, or a doctor, or does other permissible occupations, then it is permissible for him to work with non-Muslims as there might be some benefits in some kind of works and sciences, like getting some experience from them.
Allaah Knows best.