Is it permissible to remain in a company that sells pork if it is possible to move to a department that does not deal with it?

If it is possible for you to confine your work to departments of the company that do not involve what is forbidden (haram), such as the vegetable section or the section for halal meat slaughtered according to Islamic law, then there is no objection to working there. Otherwise, it is not permissible for you to work in it. Moving to a job in an institution free from what is forbidden is better.