Are pilots that are intending to work for a serious company and do commercial flying allowed to have a non visible tattoo Which means a tattoo that is not visible when wearing a summer uniform...?

It would mean a lot if someone could just confirm that it is not a problem coz i wouldn't like taking any risks. I know that visible tattoos can be a problem for pilots and they might not get hired bcs of them! So i just want to make shure that one on the back or something like that wont be a problem... be it emirates, quantas or any other big company.

any info is needed , tnx :)

Umm...if it's a non-visible tattoo, how would they know you have it and how could they disallow it ?