Given more thought, I have a couple questions.
First, do you want to do just sound design, or something else as well? We only need a sound designer, so if that's all you want to do, then that's great.
Second, how would you like me to contact you for that?
Third, how would you like to be credited? I could put a button that links to your website/itch page on the title screen, or I could put your logo and studio name in the outro of the game, or both, or something else, if you have another suggestion.