If you are a permanent clerical officer, you could take a career break, go to Australia or just abroad, try to get accounting assistant or banking assistant work. Then you would have some experience when you return to Ireland. You could extend your career break, and try to get into a bank/accounts job in Ireland.
I find that being an accountant/book keeper for a small company can be very varied. You do invoicing, debt collection, accounts payable as well as monthly accounts. You deal with the customer and supplier, as well as doing the figure work.
Alternatively, you could try to get to a senior level in the govt. job (easier said than done). you could try to get a transfer to a different dept, maybe finance in your clerical officer job.
I know what a boring job feels like. For me it was doing accounts payable in a team of 50!!! I was inputting invoices all day. No variation. The work was so standardised that I didn't even have to do account reconciliations or payment runs.