> I am concerned about the ethics of the industry itself You have a moral problem working with gambling. Decide for yourself if that's what you want to do. A

> I am concerned about the ethics of the industry itself You have a moral problem working with gambling. Decide for yourself if that's what you want to do. And don't care what other people say. > and worry that having something like this in my CV could hurt me It arguably makes your CV less neutral. It might hurt some opportunities, it might improve some, and for a lot it won't make a difference. Just don't do something you will personally regret or feel the need to hide. > Would you hire somebody who worked on gambling/betting systems? Yes. Many years ago I asked a new colleague what he used to do before joining, and he said "Oh, I used to work for a gay porn site." I bet that made him a better programmer, considering the high traffic. I liked him better for his approach to honesty. Some might have liked him less because of the porn. Standing by your choices filters away the people who won't like you anyways.