How does a US citizen living in Canada work in the US?

I have dual citizenship in both Canada and The United States, I have lived in both countries but currently I live in Canada. I just saw a job posting for a company that is based in the states but it is a remote position. Do I need to do anything extra to be allowed to work for a US company? Is it just that my taxes would be a bit more complicated? It looks like a great job but I don’t want to apply before knowing anything else that I will need to do