Hello I've just read your project description... I'm good with reactjs and django apis enough to see this project through!
I can use react-flow to implement your plow based visual programming...
Regards
Hello, I understand your whole requirements and am able to make this. I am a software engineer and have great experience in Web development and in making desktop applications. I will meet all your requirements as you requested. Please come to the inbox So I can start working on your project. Kind Regards