I use spring boot and java/kotlin, but professionally and for side-projects, changes are "instant" on side-projects and greenfield projects. Legacy enterprise is another story, there the answer is "it depends".
Use an IDE like Intellij. I have coded a lot of Python, back to java/Kotlin now, and I prefer it.
What setup do you have that it's "instant"? I put a decent amount of effort into reducing my apps startup time for local development but it's still on the order of 3-10s
Use an IDE like Intellij. I have coded a lot of Python, back to java/Kotlin now, and I prefer it.