>built with C++ And Java, and probably, more recently, some in Go. [1] [1] This is anecdata :), but I don't think a majority of their work is in Python, thoug

>built with C++ And Java, and probably, more recently, some in Go. [1] [1] This is anecdata :), but I don't think a majority of their work is in Python, though they do have some, and I also read the recent threads about their hiring Python devs. More like C++ and Java (and JavaScript for the front-end), and nowadays some Go, as I said. This is just based on reading about them on various sites, though, I don't have internal info, so could be wrong.