I don't know. But if it helps, I did not. And I know of zero colleague or friend who moved away from a traditional backend environment into a JS one. I've been

I don't know. But if it helps, I did not. And I know of zero colleague or friend who moved away from a traditional backend environment into a JS one. I've been a backend dev in Java and C# for a good 5 years now. Just one data point though. I did see people move to say Scala, Clojure, Kotlin, Rust, Go, F#, Erlang and the likes, which are arguably other mainly backend languages and ecosystems. Edit: For front end yes. Like I myself know JavaScript/HTML/CSS and use ClojureScript as well for frontend work. I understood your question more as if any backend dev had moved to using Node.js. away from more traditional backend systems.