I was with easyjet very briefly last year. The guys in charge of Flight Ops are experienced and very competent.
Their training standards are very high (this was said by the CAA and not by them so must be true). My advice is if you get offered a job make sure you are fit and that your stress level is low because they expect you to perform high.
It is a fun place to work at and for an FO a great place to learn from. the money is good and the roster problems are the same as the average airline. I'm told if you are based away from Luton the rosters get very good. i
On the whole I give easyjet a 8 out of 10!