Kotlin is probably also a good choice (but it ties you do the JVM, which does come with some operational headaches of it's own). Swift would be a fantastic lang

Kotlin is probably also a good choice (but it ties you do the JVM, which does come with some operational headaches of it's own). Swift would be a fantastic language for this kind of work, but unfortunately it's library ecosystem isn't on nearly the same level as Rust's for backend web.