Nice to meet you.
I have read your job description.
Your project is extremely easy for me, but not for others.
I'm 100% sure I can satisfy you.
Well, talking about my ability, I learned how to program in C/C++ and Java language since I was 15.
I'm C/C++/C#, Java expert.
If you want the software for only Windows, C++ or C# is okay, and if you want it for as well as MacOS etc, Java is good. Anything you want, that's fine.
Regard.
Looking forward to hearing from you soon.