From what I've seen, most companies which currently employ loadmasters do so on the operations side rather than the aircraft side.
Essentially you're stuck on the ground doing weight and balance and load planning all day long, sometimes monitoring a load. They only get in the aircraft if it's going to an offline station (aka. not a normal stop). A few still do employ load-masters on the aircraft though, but just like flight engineers (yours truly) we're a rarer and rarer breed. Unless there's an extremely good pay package or advancement is an option I wouldn't be starting a career as either one these days.