I think you found your designer. I can certainly do this for you. First of all, I have some projects which I'm currently focusing on, but I can shelve them for the moment as this would be an interesting one.
I'm a software engineer with 10 years of experience.
I have very good experience in writing applications in C++ with Qt framework (in industries and on freelancer https://www.freelancer.com/u/mtartar.html)