Thank you farofa de banana, very nice user name! I tryed to apply for a visa and when I select Brazil there's only the option to visa to join a family member or to volunteer. Therefore, is it correct to assume I can enter the country with just my employment permit? Yes. Just say you are coming for ...

The work permit is not sufficient to enter Ireland? No. You need to apply for a visa via your local Irish embassy/send documents to Dublin (depending on procedures in place) to get a visa placed in your passport. Once you have a visa, you arrive to Ireland on that visa and apply for IRP there. That...