They seem to be operating on different existing AOC’s. BCN flights are operated by Iberia crew on IB flight numbers, ORY flights will supposedly be operated on Open Skies and their crews (hence the temp job requirement for TRI/TRE’s to convert the crews from the 757/767).
I guess no recruitment until new planes/bases/own AOC. It’s worth watching this space though - I have read they are planning up to 30 A330s and several bases throughout Europe - so I think at some point they will need to recruit and offer competitive T&C’s...
P.S. Don’t take my word as a gospel. I’m not affiliated in any way with Level/IAG. Just following the market and doing some research of publicly available information...