Talk about it!
Free software matters. And OpenPaaS is free software. Is your company using a proprietary platform maintained by an external entity you don't trust? Then talk about OpenPaaS around you, and free software in general! Companies and individuals should own their software and data, not the other way around.
As a system administrator, you can deploy it, test it and tune it to suit your needs.
As a developer, you can create new modules and plug them to the platform. You can also contribute to the technology OpenPaaS is made of. Either way, the one stop shop is there.