I'm a C++, Java and Kotlin dev. Mostly Linux and C++ these days, but a lot Win32 in the past, and even some MacOS.
I've also written non-trivial amounts of C#, Javascript and some Typescript.
And some Swift, D, Rust, golang, and even some F# back in the day.
And that heatmap thing down there ⬇️⬇️⬇️ ? Well, not everything gets published to github...