As it is a real-time app with lot of concurrent tasks of pulling real-time market data, I would suggest building this component in Golang.
The modeling components can be built as python scripts to use the python's superiority in data science libraries, but the management of these pipelines will be handled concurrently by the Golang server.
Golang also gives a more powerful CLI than python.
I can containerize everything as individual microservices, and build up a kubernetes deployment strategy for managing this deployment.