So you have a residence card of an EEA Family Member with the right to work delivered in Ireland, right?
Your father, British, wants to come back to the UK and bring you with him as dependent.
I think you are looking at this route:
https://www.gov.uk/family-permit/surinder-singh
(Surinder Singh)
You might be able to apply for an EEA family permit if you’ve lived in another EEA country with an eligible family member who’s a British citizen. This is known as making a ‘Surinder Singh’ application.
Your British family member must be one of the following:
- your spouse (husband or wife) or civil partner
- your parent or grandparent (or their spouse or civil partner) - you must also be under 21 years old or dependent on them
- your child or grandchild (or their spouse or civil partner) - you must be dependent on them
As you are not under 21 years old, the key point would be to demonstrate
dependency. As you have a job, that point will be a bit delicate to demonstrate but it's the key point in your case.