I haven't nannied in the UAE but I have nannies abroad and it is very hard work.
I HAVE worked for UAE parents in the UK though and their child-rearing culture is very different to ours. Largely there is a focus on "keeping children young" so doing a lot of things for them rather than teaching independence. Often what the child says goes too, which is obviously incredibly difficult. Be prepared to not be allowed to instil any discipline, or have your word undermined.
I find this is somewhat a trend with HNW families in general, but obviously it is unfair for me to make such a sweeping sentence but its true
If you're looking for the money and don't mind hard work, look for jobs in Russia. The pay is similar (£800-£1200 net per week) but they aren't as archaic in their values and laws.
The high paying jobs come with a price - you need to absolutely dedicate your life to the job for the time you are there (often working 24/6 or even 24/7) and be prepared the be treated like a 2nd class citizen.
Generally you will be looked down upon by the other staff too, because you don't really "fit in" - nannies aren't like the other servants, its a very lonely position in a household.
On top of that, consider the difficulties of living in country where you don't know anyone, you do not have time (or are not allowed) to socialise, do not speak the language and cannot travel around easily.
On top of all of the other difficulties that come with being a live in nanny - being on call, have little privacy etc etc.
I earnt A LOT of money working abroad (Switzerland, £1000 npw) but ended spending a huge amount of it compensating for how hard it was, on flights and treats when I was back home, buying gifts etc etc.
I now have counselling because the treatment was so bad but work with a lovely normal family in the UK now, and would much rather earn slow and steady than risk my health in an environment like that again.
Having said that, I have a nanny friend who does a lot of the UAE work. She never stays in one position for long, maybe 3-4 months average (these jobs also hire and fire VERY frequently) but she bounces back because she is very strong willed and hard nosed. Almost to the point of being rude tbh. It suits a certain personality type.
Sorry to be so negative, but these jobs can cripple a nanny. Its a tough environment to be in let alone when you are familiar with your country and have close by support.