As suspected by hisham_hm, I'm paid to code in Scala. At my previous job I tried to introduce some functional languages without much success. The stack was C++

As suspected by hisham_hm, I'm paid to code in Scala. At my previous job I tried to introduce some functional languages without much success. The stack was C++/Java and a lot of Python. I learned Scala because it runs on the JVM and I thought that may help. Later I moved to another city and when looking at job offers I saw a few Scala offers (and no Ocaml in sight) so I settled on Scala. IMHO Scala gained traction because it runs on the JVM. It's easier to train Java devs because you can start by writing Java-in-Scala and incorporate specific features as you go. The web ecosystem is nice (at work we're using Play.) There's also a few killer apps, like Spark. I'm currently trying to become as proficient in Ocaml as I am with Scala, but I'm already working with Scala 8+ hours a day so it's not that easy.