Ryanair are one of the main employers of new low hour pilots who have just qualified. It's impossible to say where they would base you, but their culture has seemed to change somewhat in the past year or so, with them now being more attentive to pilots requirements and giving them their preferred base IF there's availability there. Stobart also hire low hour pilots, they have bases in Dublin, cork, Isle of Man and London Southend.
And apparently cityjet are not hiring any new first officers for the foreseeable future.
Post qualification is uncertain, some pilots get a job within weeks, others wait months and even years.