Answered by Shaykh Faraz Rabbani
Is it permitted to work in a casino, in a way unrelated to its vices?

Walaikum assalam wa rahmatullah,
It is not permitted to work in a casino, as its primary line of activity is prohibited by Allah Most High, even if one’s own work is itself not “vice-related,” because this would be assisting in sin.
Faraz Rabbani