„I'm an expert: afterwards I always know why it didn't work”
Currently I am studying computer science and also work at my university. But I also did some mathematics and physics as minor subjects.
I like efficient code, so I mostly work directly in assembly. In addition to x86, I have also been dealing with ARM assembly for about a year (including A64 and NEON). Otherwise most of it is in C.
But I have also worked with java, prolog, python and r. My least favorite activity here: reading me into frameworks. There is also LaTeX and the HTML, CSS, JS etc. stuff.