Upon entering high school, I taught myself enough C++ to do competitive programming, while I learned Java and Android development in school. I learned Ruby on Rails during an internship, and learned Django soon after.
During college, I used a lot more Python, with some C, C++, and Java on the side. I also begrudgingly used C# for game development in Unity. I picked up OCaml during my 2018 internship, and use it at my day job.