Plenty of such jobs exist in Silicon valley or down here in Irvine, California. Seen plenty of Beta Testers needed opportunities then they close the list. Mainly your spending the day wandering in a game area trying out EVERYTHING, jumping off every surface, running into every single wall, etc.. basically trying to find holes int he game or bad spawn points, etc. For example Spawning underneath the play area, or as the infamous BF4 boat used to appear on top of building during the beta (should have known how buggy the game was when we saw that happen for over a month!). Then you have a standard form to file, explaining exactly very step you did to cause it, and repeat this over.. and over.. and over and over. NO you don't actually 'play' the game, your just one of many 'monkeys' sitting there doing a segment of the game, so you really don't know much about the game perse other then the parameters outlined.
HOW to get the job: Well you better be either a 'name' on the 'list' of gamers (aka top 1000 if there is 1million players) or have a LONG list of completed games under your belt that you can recite off "oh yeah when I went left bravo then ducked to the right pipe, yeah I found the yellow gnome there... " without skipping a beat. Now we are talking serious lonnnnggggg tedious hours too.. it isn't really alot of fun till much later when it goes into Alpha then Beta for testing. I been in each of the BF4 Betas so far, as well as TitanFall and a couple others, so I done my 'volunteer' reporting before without compensation (which seems to be how alot of them want to avoid the costs of employing you).