From what I've seen, I'm surprised anyone would want to leave Aer Lingus once they've joined, it seems (from the outside) to be the best airline for an English-only speaker to work for in Europe. I've met a couple of Aer Lingus pilots and the culture seems from a social perspective to be easygoing, excellent T&Cs plus a really good variety of routes, particularly with the A321neo coming in.
Taling about commitment, I'm not that long qualified in my current profession, if I were to apply would I be seen as a leaving risk?