This is a LOT to read up on, but seriously consider mesos + aurora. It is really incredible stuff and Twitter uses it for huge production environment. The Mesosphere guys have better documentation with Marathon, but it has a lot of catching up to get to the feature set of Aurora.

I happen to be the tech lead of a team that builds internal tools for an "enterprise" company primarily using Django and Flask. Build it and then show the business how it is useful. Sadly, that means you might need to write a lot of high quality docs or high quality clients (if you write an api). I tend to favor "api first" development.