They are hiring but the interview process at pretty much all Asian carriers has a high failure rate and the training failure rate is not much better either. Mixed opinions about KAL overall, it is a good gig if you go there as a captain but I wouldn't go there as an F/O and the social working environment according to a couple of friends that are there (granted on the 73) is not very inclusive, they won't socialize with you very much or hardly at all. I would recommend that you take a look at NCA (Nippon Cargo Airlines) I'm good friends and know many of their pilots and they are all very happy there but KAL if you come in as a captain like I said and you fulfill your social agenda outside the company is a pretty good gig too.
On regards to the 744, it is the type that has the most pilots dedicated to contract flying in the world with many crew members floating between gigs.