MAPjet is apparently looking for both Captains and F/Os for a Challenger 850.
Acc. to their website Captain needs 2000hrs TT and 500 as Capt on type (either on a CL850 or a CRJ200), F/O 500hrs TT. JAA licenses only.
Supposedly to be for a Kiev and / or Vienna base, not sure about that.
Good luck.