Sorry for the late reply both of you.
@ JajaBinx: Tax on basic salary is payed in Ireland because it is an Irish company (if you want you could claim taxes back and pay them somewhere else, just don't now why you would want that). So no UK tax. That's just how it works with CityJet.
@ speedrestriction: What do you mean exactly? Maybe this answers your questions: you need 3000hrsTT. You could be hired direct entry. If you would join with less than 500hrsTT (like me), it will take about five years because you will fly about 650 hours a year. You still have to be picked out by the management, so nothing seniority based.
Am happy to answer more questions. Happy landings.