Disappointingly, this article isn't in any way about swordfighting. Sorry. Anyone who was hoping they could get a job as Inigo Montoya will have to look for the page on 'Revenge'. Fencing jobs and, to be clear, we're talking about 'jobs where you put up fences', here are slightly less glamorous but much more common than anything that happens in The Princess Bride.
Putting up fences, as long as they're not electric see under 'Qualifications', below), is one of the few things for which you cannot get a specific qualification in Australia. As such, while it certainly requires a certain amount of raw skill and ability, it's at most semi-skilled and arguably unskilled labour, and therefore doesn't pay a huge amount of money. However, it's pretty regular work, especially in rural areas where having adequate fencing can mean the difference between all your livestock running away and Well, all your livestock not running away.
Fencers will, of course, mainly be responsible for putting up, repairing and maintaining fences. Generally, fencers have other qualifications alongside the ability to put up fences, so you may well find yourself hired to do other handyman-style tasks. You will be expected to know what kind of fencing is appropriate for different circumstances, so as to meet the customers' needs. You should also have generally good spatial awareness and know how much of a given material you will need for each job, in order to make accurate estimates for your customers and ensure you turn up for work with the right equipment.