No obvious solutions? Many enterprise companies have a workflow management product. Adobe has one which it makes quite a bit of enterprise revenue from.
https://www.adobe.com/uk/marketing-cloud/experience-manager/...
https://www.adobe.com/uk/marketing-cloud/experience-manager/...
It's really just the configuration for tasks, DAGs, etc that must be done in Python. I know some people have even automating that to pull from yaml or json instead, but I prefer to have the flexibility myself.
The only concern I have is having such a critical part of my application running in a proprietary SaaS environment. Do you have plans to consider on-premise licensing or having an open-source community codebase with enterprise plans?