I think successful applicants will find that the contract terms offered will reflect what they bring to the party. If they are experienced jet operators with in excess of 2500 eJ factored jet hours and type-rated they will probably be offered direct entry SFO. If, on the other hand, they are not type-rated, have only flown turbo-props and have barely 1000hrs they should expect to be offered Flexi SO/FO. The terms will be the NEC but the joining point will vary depending on an individual's experience.
The recruiters are not daft. They know that if the offer is strictly Flexi-crew into SO then FO then they will not attract experienced, type-rated pilots.
My source is reasonably reliable.