Looks to me like the role is on the baggage make up area and not a ramp agent. Role is probably titled based on history when the ramp agents did baggage make up and aircraft loading, but now is just baggage make up and delivery to aircraft side when the new T3 facility opens. Looks like B A still do the aircraft loading.
From the ad - The post holder will be responsible for the reconciliation, loading and unloading of customer baggage in a state of the art baggage facility. The role also entails the safe transportation of customers’ baggage to and from the aircraft parking area.
That's my guess but could be wrong.
GA