Article here says that Jet2 are looking for flight crew redundancies
A spokesperson for Jet2 ... "We have recently reviewed our operations in Spain. As a result, we must sadly propose several colleague redundancies across Resort Flight Check-in, Flight Deck and Cabin Crew roles.
Jet2 to axe popular holiday service for Brits while putting hundreds of jobs at risk (msn.com)
Seems somewhat inconsistent with their expansion of fleet, and other accounts of difficulties in getting enough crew.