When you find a job one for the first things you will need to have is a bank account in Ireland. You will not be able to use your account from abroad. Generally you need to open a bank in person. It can be difficult to do so from abroad.
To open a bank account in Ireland you generally need two things. One is identification, you can use your passport. The second is proof of address. They usually ask for a bill but if you have just arrived you won’t have any bills in your name. However, you are able to use correspondence from a local authority such as Revenue (Tax).