if you are talking about working in genting highland (instead of the HQ office in KL) then the environment is not that good.
From what I heard, basic necessity is there but you will be bored like hell. You can work there for a couple of years and save a lot of money because you have nowhere to spent the money.
If you are talking about working in genting's office at menara genting then it's quite bad environment. For one, they don't pay their staff well. The turnover is quite high. Most people got there to learn something and then leave.
Genting Highlands, Staff quarters environment & workings