I strongly recommend javascript(Node.js )for the back end, because 1. Most company use it. 2. Its a library not a framework; you have more control over what you are making. 3. you could make your AI projects make its API and use it to integrate it into your website . Lastly even though you are doing full stack you still have to specialize in either back or front, Just for good meaures
But it's too slow can only control 0.5 M request per sec
Where others can make more than 7M request per sec
https://dotnet.microsoft.com/static/images/redesign/shared/tech-empower-results.svg
I’ve seen that nodejs is heavy for data processing which makes it not suitable for AI! Thank you