Their Github (!) has a collection of event sourcing libraries they've built on top of Scala/Akka. Their budget is big enough for a soft drink company to justify a sizable open source program.
So much of product, especially beverage marketing is positioning yourself as being a part of a certain community, it's very possible their open source contributions are simply an extension of that.
There is a reason why Cocacola spends an obscene amount of money marketing sugared water. Almost every country I have been, I have seen coca cola bill board ads. They paint your storefront free if it's coca cola branded. Give you a free coca cola branded fridge if you only sell their drinks. They really do go out of their way to make a brand impression.
They sponsor a lot of collegiate hackathons. College students and high-income developers working long hours are natural target customers.