Hello sir ,
let's me introduce myself , i'm a developer,both mobile (using react native or android java ) and web ( using wordpress , or React js and node Js ) , i have a lot of experience in Entrepreneurship and idealization ( + than 10 projects with their Business plan ,Mvp ,Marketing plan, even some times i used Business intelligence to check data , ... ), you can count on me to do the brainstorm as you expected, i can after that develop every thing else if you want too ( i have a team or trust person whom i can do the work ( they are expert )) ,
Contact me