Most of my 20 years of experience is Java. Now 3 years into a new job mostly using Python to build microservices. I feel much more productive using Python (plus uv, ruff and mypy for fast repeatable package management, linting and type checking). I see Python having a trajectory to keep improving and gaining more adoption - eg Python keeps growing in popularity https://survey.stackoverflow.co/2025/technology/. It will have real threads soon and better type checking with ty (thanks to astral who also make uv and ruff). Python gives an incredibly tight integration loop since you don’t wait on compiling. Our kotlin projects are always at least 2x slower for ci/cd builds. I like typescript, but working with it in IntelliJ is incredibly slow.