I can highly recommend Embarcadero RAD Studio, since you can code C++ or (it also supports Object Oriented Pascal).
Build once and deploy modern apps for every platform - FAST
With a drag & drop GUI builder and hundreds, probably thousands of 3rd party components, you write your code once and build it for Windows, macOS, iOS, Android and Linux.
The downside is the cost - over $1k (although a company can afford that) - but, it is free to use the full version until you generate over $5k using it, so that ought not to be a problem. I am not sure on the rule on company internal use; maybe best ask them, or pay.
It is very full-featured, having matured over 20 years, with great refactoring, and excellent debugger & everything else you could desire.
I find that I am incredibly productive when using it. Give it a try.
Please do post and let us know what you choose. Thanks.