Not the parent, but at my previous job we used lots of JVM languages, plus some python and a tiny bit of JS. We were not particularly successful in getting trul

Not the parent, but at my previous job we used lots of JVM languages, plus some python and a tiny bit of JS. We were not particularly successful in getting truly hermetic builds with it - a big part of was a lack of headcount actually working on it. My main takeaway is this: if you're the only one in the room asking for bazel, it's probably a bad choice. Bazel requires a lot of investment to stay nice to use, particularly in a polyglot environment. I've experienced endless friction getting things to work "in bazel" that would otherwise be simple using language-specific tooling. In my opinion, the benefits (caching, build speed, a single build tool) did not outweigh the costs (nonstandard tool means you are always operating in hard-mode compared to using language-specific build tools, it's a ton of work to make actually hermetic, devs often aren't familiar with it and don't like writing BUILD files, editor support is extremely lacking outside of IntelliJ).