Is it obligatory to endure a job that violates Sharia until a lawful alternative becomes available, or is it obligatory to resign from it immediately?

What you mentioned concerning Shariah violations in your work, such as dealing with undisciplined female employees, delaying prayers, and using pirated software, necessitates leaving this job immediately. What you read about the permissibility of enduring an unlawful source of livelihood is incorrect. The correct stance is the prohibition of working in places that incite temptation and institutions involved in forbidden activities, because it constitutes cooperation in sin and transgression. Scholars have permitted working in such cases only out of extreme necessity that allows forbidden acts, as long as it is to meet a need and there is no alternative. Your decision to resign and emigrate for the sake of Allah is an obligation upon you. You must fear Allah and rely upon Him, for whoever fears Allah, He will make for him a way out and provide for him from where he does not expect.