Dear Claudio Silva,
I have Know-how to build reliable object oriented software.
More than 25 years building high quality software and solving bugs/wrong logic in pre-existing code. That experience permits me to have exceptional quality standards in Analysis / Design /Programming. Mostly done in C++
You are right, C++ is the way to go, it makes the difference.. and Qt is also good.
I made high speed server in C++, that accept connections from clients to make request to exchanges like Binance/Bitfinex/... and return the answer to client. They were so impressed with the speed that they are thinking to rewrite part of the current software in C++ to keep up with the speed.
The bidding is for a professional level library, reliable and well tested.
Not just for playing around with it.
Please check my feedback/experience at my profile and recommendation letter at portfolio.
You have a typo error "CoBase" in the Project Description(it happens to everyone, at some time).
Our mother tongue is the same, we can talk in Portuguese if you want, for me is the same.
Best regards,
Antonio Gomes