I'm the author of testmon - finding bugs 10x faster for Python/pytest. We are working on a solution which is a considerable extension beyond existing testmon and has a nice PyCharm front-end. We're looking for a developer who has experience with both IntelliJ Platform and Python development. From a very experienced developer, we might not need much time. If you're junior, we still might be able to team-up with you. Please, email me at firstname.lastname@example.org, if you're interested.