Do you have any details about T&Cs? To me, the job offer sounds too good to be true.
8000 USD per month for a low timer? yeah... right!
Reading in more details on their website, the company seems very much inclined into p2f.
So whereas the initial job offer doesn't state it plainly, I can smell the good offer to lure as many people as possible, then once you are close enough (like buying a ticket to go there and visit them at their office) give you no option but a pay to fly contract (or a type rating, but with no job offer behind).